Your Trusted Health Guide
for Korea
Plain-language medical information referenced to Korea's MOHW, NHIS, WHO, Mayo Clinic, and NHS.
Educational purposes only · Always consult a licensed doctor · Emergencies: 119
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Symptoms
Understand common health symptoms, what causes them, and when to see a doctor in Korea.
20 articles →Diseases
Medical conditions explained clearly — causes, signs, treatments, and Korea health resources.
20 articles →Treatments
Learn about medical and cosmetic treatments available at clinics in Korea.
15 articles →Procedures
Diagnostic procedures explained — what to expect before, during, and after in Korea.
14 articles →Surgeries
Surgical procedures available in Korea — preparation, recovery, and what to expect.
14 articles →Medicines
Common medicines explained with uses, precautions, and side effects. Always consult a doctor.
20 articles →Skincare
Skincare advice and trusted brand guides for Korea's climate and skin types.
5 articles →Medical Dictionary
Plain-language explanations of medical terms used by doctors in Korea.
25 articles →Korea Health
Korea's healthcare system, NHIS, MOHW, seasonal health, and wellness resources for residents.
7 articles →Nutrition
Evidence-based nutrition advice for Korea's climate and healthy eating for residents and expats.
12 articles →Women's Health
Women's health conditions, screenings, fertility, and reproductive health resources in Korea.
10 articles →Children's Health
Child development, paediatric conditions, vaccines, and children's health services in Korea.
10 articles →All Articles
Headache
Headaches are one of the most common health complaints worldwide, ranging from mild tension headaches to debilitating migraines. Most are not serious, but some require urgent medical attention.
Fever
A fever is a temporary rise in body temperature, usually a sign that the body is fighting an infection. Most fevers are self-limiting, but high or persistent fevers require medical evaluation.
Chest Pain
Chest pain is a symptom that should never be ignored. While it can have many non-cardiac causes, it may also indicate a heart attack or other life-threatening emergency requiring immediate medical attention.
Back Pain
Back pain is the leading cause of disability worldwide, affecting up to 80% of people at some point in their lives. In Korea, sedentary office work, prolonged sitting, and lifestyle factors contribute significantly.
Skin Rash
Skin rashes are changes in the skin's colour, texture, or appearance. They are extremely common in Korea due to seasonal humidity swings, sweat, and contact with irritants. Most are harmless but some require medical attention.
Shortness of Breath: Causes, When to Worry & Treatment
Shortness of breath can range from mild exertion-related breathlessness to a sign of a serious cardiac or respiratory emergency. Knowing the difference could save your life.
Persistent Fatigue: Causes, Red Flags & Treatment
Fatigue that persists despite adequate sleep is one of the most common medical complaints — and one of the most important to investigate, as it can signal dozens of underlying conditions.
Nausea & Vomiting: Causes, Relief & When to See a Doctor
Nausea and vomiting are among the most universal human symptoms. Most cases are harmless and self-limiting, but some patterns require prompt medical evaluation.
Dizziness & Vertigo: Causes and Treatment
Dizziness is one of the most common symptoms in medicine, encompassing vertigo, lightheadedness, and imbalance. Identifying the type of dizziness is the first step to treatment.
Joint Pain: Causes, Diagnosis & Treatment
Joint pain is one of the most common complaints in any doctor's office. From osteoarthritis and gout to autoimmune arthritis and sports injuries, treatment has advanced dramatically.
Unexplained Weight Loss: Causes & When to See a Doctor
Losing 5% or more of body weight over 6–12 months without intentional dieting is clinically significant and warrants a full medical evaluation.
Hair Loss (Alopecia): Causes, Types & Treatment
Hair loss affects up to 50% of people at some point in their lives. Understanding whether your hair loss is pattern baldness, a medical condition, or a nutritional deficiency guides effective treatment.
Heart Palpitations: Causes, Red Flags & Cardiac Care
Palpitations are the awareness of one's own heartbeat — often described as fluttering, racing, pounding, or missed beats. Most are benign, but some require investigation.
Swollen Legs & Ankle Oedema: Causes & Treatment
Swollen ankles and legs are a very common complaint, especially during Korea's hot summer months. Most cases are benign, but some reflect serious underlying organ disease.
Frequent Urination: Causes, Diagnosis & Treatment
Urinating 8 or more times per day, or multiple times at night, is considered frequent urination. It can range from a minor inconvenience to a sign of significant underlying disease.
Sudden Vision Changes: Causes, Emergencies & Eye Care
Changes in vision — whether sudden or gradual — should never be ignored. From benign refractive errors to retinal detachment and stroke, vision changes span a wide spectrum of urgency.
Numbness & Tingling: Causes, Red Flags & Neurology Care
Tingling, pins and needles, or numbness — called paraesthesia — is very common and usually benign. However, certain patterns are red flags for stroke, multiple sclerosis, or serious nerve damage.
Insomnia: Causes, Sleep Hygiene & Treatment
Insomnia — difficulty falling or staying asleep — affects millions and has serious consequences for physical health, mental health, and quality of life. Effective treatments are available.
Abdominal Pain: Causes, Red Flags & When to Go to Emergency
Abdominal pain is one of the most common reasons for emergency department visits worldwide. While most causes are benign, some require immediate surgery or urgent investigation.
Fever in Children: Management, Red Flags & Paediatric Care
Fever is the body's natural defence against infection. Most fevers in children are benign and self-limiting, but some patterns require urgent medical assessment.
Diabetes
Diabetes mellitus is a chronic condition characterised by elevated blood glucose. Korea's diabetes prevalence has risen steadily, now affecting roughly 1 in 7 adults.
High Blood Pressure (Hypertension)
Hypertension (high blood pressure) is called the 'silent killer' because it usually has no symptoms. It is one of the most common chronic diseases in Korea and a major risk factor for heart attack and stroke.
Asthma
Asthma is a chronic inflammatory condition of the airways causing recurrent episodes of wheezing, breathlessness, chest tightness, and coughing. Korea's seasonal fine dust and air quality swings make asthma management particularly important.
Eczema (Atopic Dermatitis)
Eczema is a chronic inflammatory skin condition causing dry, itchy, red, and cracked skin. Korea's seasonal extremes — humid summers and dry, cold winters — create unique challenges for eczema management.
Anxiety Disorder
Anxiety disorders are the most common mental health conditions worldwide. In Korea, stress from work culture, academic pressure, and social expectations contributes significantly to anxiety among all age groups.
Heart Disease
Heart disease is the leading cause of death globally, and Korea's healthcare system has invested heavily in world-class cardiac care to address it. Understanding risk factors and prevention is the most powerful tool available.
Stroke
Stroke is a medical emergency where blood supply to part of the brain is interrupted. Every minute counts — recognising the signs and calling 119 immediately can save a life and prevent permanent disability.
Chronic Kidney Disease
Chronic kidney disease (CKD) affects millions globally and is increasingly common in Korea, driven by high rates of diabetes and hypertension — its two leading causes. Early detection and management can dramatically slow its progression.
Thyroid Disease
The thyroid gland controls metabolism, energy, and many body functions. Thyroid disorders are among the most common hormonal conditions worldwide — and highly treatable with proper diagnosis and management.
PCOS (Polycystic Ovary Syndrome)
PCOS is one of the most common hormonal conditions in women of reproductive age, affecting up to 1 in 10 women. It is highly manageable with the right treatment and lifestyle approach.
Gout
Gout is caused by excess uric acid crystallising in joints, causing sudden, severe attacks of pain — most commonly in the big toe. It is highly treatable and preventable with the right management.
COPD (Chronic Obstructive Pulmonary Disease)
COPD is a progressive lung condition causing breathing difficulties that gradually worsen over time. It is largely preventable — smoking is the leading cause — and highly manageable with the right treatment plan.
Depression
Depression is a common and serious medical condition that affects how you feel, think, and handle daily activities. It is not a weakness — it is a treatable medical condition, and effective help is available across Korea.
Liver Disease
The liver is one of the body's most vital organs, performing over 500 functions. Liver disease ranges from reversible fatty liver to cirrhosis. Early detection and management can prevent serious complications.
Obesity
Obesity is a chronic medical condition — not a personal failing. Korea has invested in comprehensive obesity management programmes including lifestyle medicine, pharmacotherapy, and bariatric surgery to support residents in achieving better health.
Osteoporosis
Osteoporosis is a condition of reduced bone density and strength, increasing fracture risk. In Korea, vitamin D deficiency — extremely common due to sun avoidance and indoor lifestyle — is a key contributing factor.
IBS (Irritable Bowel Syndrome)
IBS is one of the most common gastrointestinal conditions, affecting up to 15% of adults. It causes abdominal pain and altered bowel habits without structural disease. Effective management is possible with the right approach.
Cancer
Cancer is a leading cause of death globally, but many cancers are preventable through screening, vaccination, and lifestyle changes. Korea has invested in world-class cancer care and one of the world's most comprehensive national screening programmes.
Lupus (SLE)
Lupus (Systemic Lupus Erythematosus) is a complex autoimmune disease where the immune system attacks the body's own tissues. It is more common in women and is notably more prevalent in East Asian populations, including in Korea.
Parkinson's Disease
Parkinson's disease is a progressive neurological condition affecting movement, caused by the loss of dopamine-producing cells in the brain. While there is no cure, modern treatments effectively manage symptoms and maintain quality of life.
Botox (Botulinum Toxin) Treatment
Botox (botulinum toxin) is an injectable treatment used to relax facial muscles, reducing the appearance of wrinkles and fine lines. It is one of the most popular non-surgical cosmetic procedures in Korea.
Laser Hair Removal
Laser hair removal uses concentrated light to target and destroy hair follicles, providing long-term reduction of unwanted hair. It is one of the most popular aesthetic treatments in Korea for all skin types.
Physiotherapy
Physiotherapy (physical therapy) uses movement, exercise, and manual techniques to restore function, reduce pain, and improve quality of life. It treats a wide range of musculoskeletal, neurological, and post-surgical conditions.
IVF (In Vitro Fertilisation) Treatment
IVF (In Vitro Fertilisation) is an assisted reproductive technology that helps people with fertility challenges conceive. Eggs and sperm are combined outside the body, and resulting embryos are transferred to the uterus.
LASIK Eye Surgery
LASIK (Laser-Assisted In Situ Keratomileusis) is a refractive surgery that uses laser technology to reshape the cornea, correcting nearsightedness, farsightedness, and astigmatism to reduce or eliminate the need for glasses or contact lenses.
Chemotherapy: How It Works, Side Effects & Cancer Care
Chemotherapy uses powerful medicines to destroy cancer cells or stop them dividing. Modern supportive care has transformed tolerability, and Korea's National Cancer Center and major university hospitals deliver internationally standardised chemotherapy protocols.
Dialysis: Kidney Replacement Therapy
Dialysis replaces the function of failed kidneys — filtering waste products and excess fluid from the blood. Korea offers comprehensive haemodialysis and peritoneal dialysis services.
PRP Therapy (Platelet-Rich Plasma): Evidence, Uses & Availability
PRP therapy uses concentrated growth factors from your own blood to promote tissue healing. It has established uses in orthopaedics and hair restoration, with growing evidence in other areas.
Cognitive Behavioural Therapy (CBT): How It Works & Finding a Therapist
CBT is the most evidence-based psychological therapy for depression, anxiety disorders, phobias, OCD, and insomnia. It is available in Korea through private psychology clinics and community mental health centres.
Cancer Immunotherapy: Checkpoint Inhibitors & Biological Therapy
Immunotherapy has transformed outcomes in many cancers — from melanoma and lung cancer to bladder and kidney cancer. Korea's National Cancer Center and major hospitals offer cutting-edge immunotherapy as part of multidisciplinary cancer care.
Radiation Therapy: Cancer Treatment, Side Effects & Radiation Oncology
Radiation therapy uses precisely targeted radiation to destroy cancer cells while minimising damage to surrounding healthy tissue. Korea's National Cancer Center and major hospitals offer advanced radiotherapy technologies.
Blood Transfusion: Safety, Types & Blood Donation
Blood transfusions are among medicine's most important life-saving interventions. Korea maintains strict blood safety standards through the Korean Red Cross Blood Services and actively encourages blood donation.
Phototherapy (Light Therapy): Psoriasis, Vitiligo & Skin Treatment
Phototherapy uses controlled doses of ultraviolet light to treat chronic skin conditions like psoriasis, vitiligo, and eczema — an effective, drug-free approach to difficult skin disorders.
Acupuncture: Evidence, Uses & Availability
Acupuncture — a core practice of Traditional Korean Medicine — has demonstrated evidence for chronic pain, headache, and nausea. Learn what the science says and where to access qualified practitioners in Korea.
Stem Cell Therapy & Bone Marrow Transplant: Treatment & Services
Stem cell transplantation is a proven life-saving treatment for blood cancers and blood disorders. Learn the difference between established and experimental stem cell therapies.
MRI Scan
An MRI (Magnetic Resonance Imaging) scan uses powerful magnetic fields and radio waves to produce detailed images of the body's internal structures. It is a safe, non-invasive diagnostic tool used across a wide range of medical conditions.
Blood Tests
Blood tests are one of the most common diagnostic tools in medicine, used to assess overall health, diagnose conditions, monitor treatments, and screen for disease risk factors. Most tests require a simple blood draw from a vein.
Ultrasound Scan
Ultrasound imaging uses high-frequency sound waves to create real-time images of internal organs, blood vessels, and soft tissues. It is safe, painless, and does not use radiation — making it suitable for all ages including pregnant women.
ECG (Electrocardiogram)
An ECG (Electrocardiogram) is a quick, painless test that records the electrical activity of the heart. It is used to detect arrhythmias, heart attacks, and other cardiac conditions.
CBC Blood Test
A Complete Blood Count (CBC) is one of the most frequently ordered blood tests. It measures the different types of cells in your blood — red blood cells, white blood cells, and platelets — providing important clues about your overall health.
Colonoscopy: Colorectal Cancer Screening & Bowel Investigation
Colonoscopy allows direct visual inspection of the entire large bowel — the gold standard for colorectal cancer screening and diagnosing bowel conditions. Korea's GI centres offer this procedure routinely.
CT Scan (Computed Tomography): What It Involves & Radiation Safety
CT scans produce detailed three-dimensional images of internal body structures using X-ray technology — invaluable for diagnosing trauma, cancer, stroke, and organ disease.
MRI Scan: How It Works, What to Expect & Services
MRI (magnetic resonance imaging) provides unparalleled soft tissue detail without using radiation — essential for brain, spine, joint, liver, and cardiac imaging.
Gastroscopy (Upper Endoscopy): Procedure Guide & GI Services
Gastroscopy passes a flexible camera through the mouth to examine the oesophagus, stomach, and duodenum — diagnosing ulcers, reflux disease, H. pylori infection, and early cancer.
Mammography: Breast Cancer Screening Guide for Women
Mammography uses low-dose X-rays to detect breast cancer at an early, treatable stage. Korea's National Cancer Screening Program (NCSP) offers mammography to women aged 40 and over every two years.
Spirometry: Lung Function Testing for Asthma & COPD
Spirometry measures how much air you can breathe in and out and how fast — the essential test for diagnosing asthma, COPD, and other lung conditions. Available at local clinics and pulmonary clinics across Korea.
DEXA Bone Density Scan: Osteoporosis Screening & Treatment
DEXA scanning measures bone mineral density to diagnose osteoporosis and assess fracture risk — a simple, low-radiation X-ray test that helps prevent life-changing fragility fractures.
Echocardiogram: Heart Ultrasound
An echocardiogram (echo) uses soundwaves to visualise the heart's structure and function — assessing valve disease, heart muscle function, and congenital abnormalities without radiation.
Biopsy: Types, What to Expect & Pathology Services
A biopsy is the definitive way to diagnose cancer and many other conditions — removing a small piece of tissue for microscopic examination. Korea's pathology services provide rapid, expert diagnosis.
Rhinoplasty (Nose Job)
Rhinoplasty is a surgical procedure to reshape or resize the nose for cosmetic or functional purposes. It is one of the most commonly requested cosmetic surgeries in Korea.
Cataract Surgery
Cataract surgery removes the eye's clouded natural lens and replaces it with a clear artificial lens (intraocular lens implant). It is one of the safest and most successful surgical procedures in the world.
Knee Replacement Surgery
Knee replacement (arthroplasty) is a surgical procedure to resurface or replace damaged knee joint components with prosthetic implants. It is highly effective in relieving chronic knee pain and restoring mobility in patients with severe arthritis.
Cesarean Section (C-Section)
A cesarean section (C-section) is a surgical delivery in which the baby is born through incisions in the mother's abdomen and uterus. It accounts for approximately one-third of all births in Korea and is performed when vaginal delivery poses risks to mother or baby.
Bariatric Surgery
Bariatric surgery is a group of surgical procedures that help people with severe obesity lose significant weight by modifying the stomach, intestines, or both. It is one of the most effective long-term treatments for obesity and its related health conditions.
Appendectomy: Appendix Removal Surgery
Appendectomy — removal of the appendix — is one of the most common emergency surgical procedures. Prompt surgery prevents life-threatening perforation.
Gallbladder Removal (Laparoscopic Cholecystectomy): Surgery Guide
Gallbladder removal (cholecystectomy) is one of the most common elective surgeries worldwide — performed laparoscopically through small keyhole incisions with rapid recovery.
Hip Replacement Surgery: What to Expect & Orthopaedic Care
Total hip replacement is one of the most successful operations in modern medicine — transforming quality of life for patients with severe hip arthritis. Korea offers excellent orthopaedic care.
ACL Reconstruction: Knee Surgery for Athletes & Sports Injuries
ACL reconstruction rebuilds the torn anterior cruciate ligament using a tendon graft — essential for athletes and active individuals to return to sport with a stable knee.
Coronary Artery Bypass Surgery (CABG): Heart Surgery Guide
Coronary artery bypass grafting (CABG) uses blood vessels from elsewhere in the body to bypass blocked coronary arteries — restoring blood flow to the heart muscle and relieving angina.
Hysterectomy: Uterus Removal Surgery
Hysterectomy — removal of the uterus — is one of the most common major surgeries in women, treating heavy periods, fibroids, endometriosis, and gynaecological cancers.
Cataract Surgery: Lens Replacement & Vision Restoration
Cataract surgery removes the eye's cloudy natural lens and replaces it with a clear artificial lens — safe, quick, and transformative for vision quality. Widely available in Korea.
Tonsillectomy: Tonsil Removal Surgery for Children & Adults
Tonsillectomy is one of the most common ENT surgeries — removing chronically infected or enlarged tonsils to treat recurrent tonsillitis and sleep-disordered breathing.
Wisdom Tooth Extraction
Wisdom tooth extraction is one of the most common surgical procedures performed at dental and oral surgery clinics across Korea, usually needed when teeth are impacted, misaligned, or causing pain.
Paracetamol (Acetaminophen)
Paracetamol (also known as acetaminophen) is one of the most widely used medicines globally for pain relief and fever reduction. Understanding its appropriate use and important precautions can help you use it safely under medical guidance.
Ibuprofen
Ibuprofen is a non-steroidal anti-inflammatory drug (NSAID) used to relieve pain, reduce fever, and decrease inflammation. It is available over the counter in Korea under brand names including Brufen and Advil.
Metformin
Metformin is the most widely prescribed first-line medication for type 2 diabetes worldwide. It lowers blood glucose levels primarily by reducing the amount of sugar the liver releases into the bloodstream.
Omeprazole
Omeprazole is a proton pump inhibitor (PPI) that reduces stomach acid production. It is used to treat acid reflux (GERD), stomach ulcers, and conditions of excessive stomach acid.
Cetirizine
Cetirizine is a second-generation antihistamine used to relieve allergy symptoms such as runny nose, sneezing, itchy eyes, and hives. It is one of the most commonly used allergy medicines in Korea.
Aspirin: Uses, Dosing & Drug Interactions | Korea Pharmacy Guide
Aspirin (acetylsalicylic acid) is one of the oldest and most versatile medicines — used for pain, fever, and as a cornerstone of cardiovascular prevention therapy.
Atorvastatin (Lipitor): Cholesterol Lowering & Cardiovascular Protection
Atorvastatin is the most prescribed statin globally — proven to reduce heart attack, stroke, and cardiovascular death in high-risk patients by lowering LDL ('bad') cholesterol.
Amlodipine: Blood Pressure Control & Angina Treatment Guide
Amlodipine is one of the most prescribed blood pressure medications worldwide — effective, once-daily dosing, and well-tolerated by most patients.
Salbutamol (Ventolin): Asthma Reliever Inhaler Guide for Korea
Salbutamol is the blue reliever inhaler used during asthma attacks and for quick relief of wheeze and breathlessness. Correct technique maximises its effectiveness.
Amoxicillin: Antibiotic Uses, Dosing & Resistance Awareness
Amoxicillin is a broad-spectrum penicillin antibiotic effective against many bacterial infections. Understanding when it's needed — and when it isn't — helps preserve its effectiveness.
Metformin: Diabetes Management & Side Effects Guide for Korea
Metformin has been the cornerstone of type 2 diabetes management for over 60 years — effective, safe, inexpensive, and with proven cardiovascular benefits beyond just lowering blood sugar.
Levothyroxine: Thyroid Hormone Replacement
Levothyroxine is the standard treatment for an underactive thyroid (hypothyroidism) — replacing the hormone the thyroid cannot make sufficiently. Correct dosing and timing maximises effectiveness.
Sertraline (Zoloft): Depression & Anxiety Treatment Guide
Sertraline is a selective serotonin reuptake inhibitor (SSRI) — among the most prescribed and best-tolerated antidepressants for depression, anxiety disorders, OCD, and PTSD.
Vitamin D Deficiency & Supplementation
Vitamin D deficiency is extremely common in Korea — driven by an indoor office culture, sun-avoidance beauty norms, and long winters with limited sunlight. Testing and supplementation are simple and effective.
Folic Acid: Pregnancy Prevention of Neural Tube Defects & Uses
Folic acid (vitamin B9) prevents neural tube defects such as spina bifida when taken before and during early pregnancy. All women who could become pregnant should take it daily.
Omeprazole (Losec): Acid Reflux, GERD & Stomach Protection Guide
Omeprazole is a proton pump inhibitor (PPI) — one of the most prescribed medicines globally for heartburn, acid reflux, peptic ulcers, and stomach protection with NSAIDs.
Ibuprofen: Pain Relief, Inflammation & Safe Use Guide for Korea
Ibuprofen is an effective NSAID for pain, inflammation, and fever — but it carries real risks for the stomach and kidneys, especially in dehydrated individuals during Korea's hot, humid summers.
Paracetamol (Panadol): Safe Use, Dosing & Overdose Risk
Paracetamol (acetaminophen) is the world's most widely used pain reliever — safe and effective at correct doses, but liver-damaging in overdose. Knowing the limits protects your health.
Prednisolone: Corticosteroid Uses, Side Effects & Safe Use
Prednisolone is a versatile corticosteroid used for inflammatory and autoimmune conditions — highly effective but requiring careful use, monitoring, and tapering to avoid side effects.
Azithromycin: Uses, Dosage & Side Effects | Korea Pharmacy Guide
Azithromycin (sold as Zithromax or Z-Pack) is one of the most commonly prescribed antibiotics in Korea for treating chest infections, throat infections, sinusitis, and chlamydia.
Acne Skincare
Acne is one of the most common skin concerns seen by dermatologists in Korea, exacerbated by summer humidity, fine dust pollution, and the dry indoor heating of winter. An effective skincare routine can significantly reduce breakouts.
Best Sunscreen for Korea: Complete SPF Guide
Korea's UV index varies significantly by season, peaking in summer, but daily sunscreen use is one of the most important skincare steps year-round for all skin tones and ages. A good SPF protects against sunburn, premature ageing, hyperpigmentation, and skin cancer.
CeraVe Skincare: Is It Right for Skin
CeraVe is a dermatologist-developed skincare brand formulated around ceramides and hyaluronic acid to support and restore the skin's natural moisture barrier. It is widely available in Korea and popular among dermatologists for sensitive and dry skin.
La Roche-Posay Skincare: Guide for Korea
La Roche-Posay is a French dermatological skincare brand formulated with thermal spring water, clinically tested on sensitive skin. It is widely recommended by dermatologists in Korea for sun-damaged, sensitive, acne-prone, and post-procedure skin.
Skin Pigmentation Treatment
Hyperpigmentation — dark patches, uneven skin tone, melasma, and post-inflammatory marks — is one of the most common skin concerns treated by dermatologists in Korea. Effective treatment combines strict sun protection with targeted skincare and clinical procedures.
BMI (Body Mass Index)
BMI (Body Mass Index) is a number calculated from a person's weight and height that is used as a screening tool to categorise underweight, healthy weight, overweight, and obesity. It is widely used in clinical settings in Korea.
Inflammation
Inflammation is the body's immune response to injury, infection, or harmful stimuli. It can be acute (short-term, protective) or chronic (long-term, harmful). Many common diseases involve chronic inflammation.
Chronic Disease
A chronic disease is a long-lasting health condition that generally cannot be cured but can be managed with treatment, lifestyle changes, and regular medical follow-up. Korea has high rates of several chronic diseases including diabetes and hypertension.
Hypertension (High Blood Pressure)
Hypertension (high blood pressure) is a chronic condition in which the force of blood against artery walls is persistently too high. It is one of the most common conditions managed by doctors in Korea and a leading risk factor for heart attack and stroke.
Prognosis
Prognosis is a medical term for the predicted outcome of a disease or condition — how it is likely to progress, what the recovery chances are, and the expected impact on quality of life. It is an estimate, not a certainty.
Anaemia: Definition, Causes & Treatment | Medical Dictionary
Anaemia is a reduction in the number of red blood cells or their haemoglobin content, impairing oxygen delivery to tissues — causing fatigue, pallor, and breathlessness.
Arrhythmia: Abnormal Heart Rhythms | Medical Dictionary
An arrhythmia is any deviation from the normal, regular heart rhythm — encompassing slow rhythms (bradycardia), fast rhythms (tachycardia), and irregular rhythms (such as atrial fibrillation).
Autoimmune Disease: Definition & Key Conditions | Medical Dictionary
Autoimmune diseases occur when the immune system mistakenly attacks the body's own cells and tissues — there are over 80 distinct autoimmune conditions affecting different organ systems.
Cholesterol: LDL, HDL, Triglycerides & Cardiovascular Risk | Medical Dictionary
Cholesterol is a lipid molecule essential for cell membranes, hormones, and bile acids — but elevated LDL cholesterol significantly increases the risk of heart attack and stroke.
Inflammation: Acute vs Chronic
Inflammation is the body's fundamental protective response to injury, infection, or irritants — producing redness, swelling, heat, and pain. Chronic inflammation underlies many major diseases.
Hypertension (High Blood Pressure): Definition & Stages | Medical Dictionary
Hypertension — persistently elevated blood pressure — is the most common cardiovascular risk factor globally, affecting over 1 billion people and often causing no symptoms until serious complications occur.
Sepsis: Life-Threatening Infection
Sepsis is a life-threatening medical emergency — a dysregulated immune response to infection causing organ dysfunction. Rapid recognition and treatment saves lives.
Remission: What It Means in Cancer & Chronic Disease | Medical Dictionary
Remission is the partial or complete disappearance of the signs and symptoms of a disease — particularly used in cancer and autoimmune conditions.
Prognosis: What It Means & How It's Determined | Medical Dictionary
Prognosis is a medical estimate of the likely course and outcome of a disease — used to guide treatment decisions, set realistic expectations, and plan care.
Comorbidity: Multiple Conditions & Complex Care | Medical Dictionary
Comorbidity refers to the presence of two or more medical conditions in a patient — which can interact, complicate treatment, and affect overall prognosis.
Triage: Emergency Prioritisation
Triage is the clinical process of prioritising patients based on urgency — ensuring those who are most critically ill receive immediate care, while stable patients wait appropriately.
Palliative Care: Quality of Life, Pain Management & End-of-Life Support
Palliative care is specialised medical care focused on relieving suffering and improving quality of life for patients with serious illness — it complements curative treatment and is not only for end of life.
Insulin Resistance: Metabolic Root of Diabetes & Obesity | Medical Dictionary
Insulin resistance is the reduced ability of body cells to respond to insulin — the driver of type 2 diabetes, metabolic syndrome, and PCOS.
Haemoglobin: Oxygen Transport, Normal Ranges & Disorders | Medical Dictionary
Haemoglobin is the iron-containing protein in red blood cells that carries oxygen from the lungs to body tissues — its measurement is central to diagnosing anaemia and haemoglobin disorders.
Malignant vs Benign: Understanding Tumours | Medical Dictionary
Malignant means cancerous — capable of invading and spreading. Benign means non-cancerous — growing locally without invading surrounding tissue or spreading to distant sites.
Electrolytes: Sodium, Potassium & Body Balance | Medical Dictionary
Electrolytes are dissolved minerals carrying an electrical charge — essential for nerve transmission, muscle contraction, fluid balance, and cellular function.
Diagnosis: The Medical Process of Identifying Disease | Medical Dictionary
Diagnosis is the process of identifying what disease or condition a patient has — combining clinical history, physical examination, and investigations to reach a conclusion.
Biopsy: What It Is, Types & What to Expect | Medical Dictionary
A biopsy is a procedure in which a small sample of tissue or cells is removed from the body and examined under a microscope to diagnose disease — most often to test for cancer.
Glucose: Blood Sugar Explained | Medical Dictionary
Glucose is the main sugar in the blood and the body's primary source of energy. Blood glucose levels are tightly regulated by insulin and are central to the diagnosis and management of diabetes.
Metabolism: What It Is and How It Affects Your Health | Medical Dictionary
Metabolism is the sum of all chemical reactions in the body that convert food into energy and build or break down tissues. It determines how quickly your body burns calories and is central to weight management and overall health.
Korea's National Health Insurance System: What It Means for You
Korea's National Health Insurance Service (NHIS) provides mandatory, near-universal coverage to citizens and long-term residents. Combined with a dense, technologically advanced hospital network, it makes Korea one of the most accessible healthcare systems in the world.
Seasonal Health Risks
Korea's four distinct seasons each bring their own health risks — from summer heatwave advisories to winter cold exposure. Understanding both extremes helps residents stay safe year-round.
Fine Dust (미세먼지) and Respiratory Health
Fine dust (미세먼지) is one of the most talked-about public health topics in Korea, with daily air quality alerts shaping how residents plan outdoor activity, especially in spring.
Vaccination Schedule
Korea operates a comprehensive national immunisation programme through the KDCA, providing subsidised or free childhood vaccines and a range of options for adults and travellers.
Mental Health Support
Korea has significantly expanded mental health services and public awareness in recent years. Professional support is available and confidential — seeking help is a sign of strength, not weakness.
NHIS Health Insurance
Korea's National Health Insurance Service (NHIS) provides mandatory coverage for citizens and long-term residents, ensuring broad access to primary and specialist healthcare across a dense nationwide provider network.
Healthy Lifestyle
Living healthily in Korea means embracing a culture that already prizes outdoor activity, walkable cities, and a vegetable- and fermentation-rich diet — while adapting to four distinct seasons.
Mediterranean Diet
The Mediterranean diet is one of the most evidence-backed eating patterns in the world — and most of its staple ingredients are widely available in Korea's supermarkets.
Fermented Foods
Korea has one of the world's richest fermented food traditions — kimchi, doenjang, gochujang, and jang sauces — with genuine, evidence-backed benefits for gut health alongside some considerations to manage.
Dehydration Prevention
With hot, humid summers and periods of intense heat, dehydration is a real health risk in Korea — especially for outdoor workers, children, and the elderly.
Vitamin D Deficiency
Despite Korea's four-season climate, vitamin D deficiency affects a majority of residents — due to indoor lifestyles, sun avoidance for cosmetic reasons, and long winters.
Iron Deficiency Anaemia Diet | Iron-Rich Foods & Nutrition Tips
Iron deficiency is the world's most common nutritional deficiency and a leading cause of anaemia in Korea, particularly affecting women of childbearing age and young children.
Omega-3 Fatty Acids | Benefits, Foods & Korean Fish Sources
Omega-3 fatty acids are essential fats your body cannot produce — they protect the heart, reduce inflammation, and support brain development, and Korea's local fish are among the richest natural sources.
Calcium & Bone Health | Best Sources & Daily Requirements
Calcium is the most abundant mineral in the body — 99% is stored in bones and teeth. Getting enough throughout life is essential for preventing osteoporosis, especially in Korea where vitamin D deficiency is widespread.
Pregnancy Nutrition
Good nutrition during pregnancy supports your baby's development and your own health. Here is what to eat, what to avoid, and which supplements are recommended for pregnant women in Korea.
Healthy Eating for Children
Childhood is the most important window for establishing lifelong healthy eating habits. Korea's rising childhood obesity rates make good nutrition guidance more important than ever.
Intermittent Fasting | How It Works, Benefits & Risks
Intermittent fasting cycles between periods of eating and fasting to improve metabolic health and aid weight management — but it is not suitable for everyone.
Reducing Sugar Intake | Hidden Sugar Sources & Healthy Alternatives
Sugar consumption in Korea has risen with the growth of convenience foods and sweetened drinks — a key contributor to rising obesity and type 2 diabetes rates. Most sugar in the Korean diet is hidden in drinks, sauces, and processed foods.
Low Sodium Diet | Reducing Salt Intake for Blood Pressure
Hypertension (high blood pressure) affects a large share of adults in Korea — and high salt intake is a primary modifiable risk factor. Korea's traditional cuisine, while healthy in many respects, is genuinely high in sodium.
PCOS (Polycystic Ovary Syndrome) | Symptoms, Causes & Treatment
PCOS affects 1 in 10 women of reproductive age and is the most common cause of irregular periods and hormonal imbalance. It is highly treatable and manageable in Korea.
Endometriosis | Symptoms, Diagnosis & Treatment Options
Endometriosis is a chronic condition where tissue similar to the uterine lining grows outside the uterus — causing severe pain, infertility, and significantly impacting quality of life.
Menopause | Symptoms, HRT & Managing the Change
Menopause is the natural end of menstruation, typically occurring between ages 45–55. Hot flushes, sleep disruption, and mood changes are common — but effective treatments are available in Korea.
Breast Cancer Screening
Breast cancer is one of the leading cancer diagnoses in women in Korea. Regular mammography screening significantly improves survival rates — and Korea has a well-developed national screening programme.
Cervical Cancer Screening
Cervical cancer is almost entirely preventable through HPV vaccination and regular smear tests. Korea has a national HPV vaccination programme and cervical screening is available across health facilities.
Postpartum Depression | Symptoms, Causes & Support
Postpartum depression affects a significant share of new mothers and is not a sign of weakness or failure — it is a common, treatable medical condition caused by the dramatic hormonal and life changes after childbirth.
Contraception Options
Korea offers a range of contraceptive methods through hospitals, private clinics, and pharmacies. Understanding your options helps women and couples make informed family planning decisions.
Uterine Fibroids | Symptoms, Treatment & Fertility Impact
Uterine fibroids are non-cancerous growths of the uterus, present in up to 70% of women by age 50. Most cause no symptoms, but heavy periods, pelvic pain, and fertility problems bring many women to seek treatment.
Ovarian Cysts | Symptoms, Types & Treatment
Ovarian cysts are fluid-filled sacs on or inside the ovary. Most are functional, resolve spontaneously, and cause no symptoms — but some require investigation or treatment.
Female Fertility
Infertility affects 1 in 6 couples globally. Korea has world-class fertility services and strong government support for treatment — and most causes of female infertility are treatable, with the key being to seek help at the right time.
Fever in Children | When to Worry & Treatment
Fever in children is one of the most common reasons parents visit the emergency department in Korea. Most fevers are caused by viral infections and resolve on their own — but certain signs require urgent medical attention.
Child Development Milestones | What to Expect from Birth to Age 5
Child development milestones — physical, language, cognitive, and social — are helpful guides for parents. While all children develop at their own pace, significant delays warrant early evaluation.
Childhood Asthma
Asthma is the most common chronic disease in children and is notably affected by Korea's seasonal air quality. With the right management plan, children with asthma can lead fully active lives.
Autism Spectrum Disorder (ASD) in Children | Signs, Diagnosis & Support
Autism spectrum disorder (ASD) is a neurodevelopmental condition affecting communication, social interaction, and behaviour. Early diagnosis and intervention significantly improve lifelong outcomes.
ADHD in Children | Symptoms, Diagnosis & Management
ADHD is one of the most common neurodevelopmental conditions in childhood — affecting focus, impulse control, and activity levels. With the right support, children with ADHD thrive.
Childhood Vaccines
Korea's National Immunization Program (NIP) provides vaccines protecting children against 17 serious diseases, most free or heavily subsidised through NHIS. Vaccinations are among the safest and most effective medical interventions available.
Newborn Care Guide for Korea | First Weeks at Home
The first weeks with a newborn are joyful but overwhelming. Here is a practical guide for new parents in Korea — from feeding and sleeping to knowing when to call your doctor.
Childhood Obesity
Childhood obesity rates in Korea have risen steadily in recent years. Obesity in childhood sets the trajectory for lifelong health problems — but early intervention and healthy habits can reverse it.
Ear Infections in Children | Symptoms, Treatment & When to See a Doctor
Ear infections (otitis media) are the most common bacterial infection in childhood. Most resolve without antibiotics — but recurrent infections can affect hearing and speech development.
Bedwetting (Enuresis) in Children | Causes, Age Guide & Treatment
Bedwetting is normal in young children and is not a behaviour problem or the child's fault. Most children stop naturally by age 7, but persistent bedwetting beyond this responds well to treatment.
This encyclopedia is for educational purposes only and does not replace medical advice from a licensed doctor. Always consult a qualified healthcare professional in Korea. For emergencies, call 119.