Hihy Health
Encyclopedia

Angina (Angina Pectoris)

#angina, #chest pain, #myocardial infarction, #coronary artery, #atherosclerosis, #stent, #sudden death

Angina is a cardiovascular condition in which the coronary arteries — the blood vessels that supply oxygen and nutrients to the heart — become narrowed, causing a dull chest pain. Because heart disease can be a major cause of sudden death, if you feel chest discomfort that is different from what you normally experience, please do not delay in consulting a medical specialist.

2026-06-26

Aortic Valve Stenosis

#Aortic valve stenosis, #Aortic valve, #TAVI, #Heart valve, #Age-related disease, #Chest ache, #Chest pain, #Tight chest, #Chest tightness, #Collapsing, #Losing consciousness, #Fainting

Aortic valve stenosis is a condition in which the aortic valve — a one-way door between the heart and the aorta that keeps blood flowing in a single direction — no longer opens properly, restricting blood flow. It is a common condition of aging: more than 1 in 10 people age 80 and older have it. In patients with severe disease and symptoms, the condition can worsen quickly without appropriate treatment, so evaluation by a medical specialist is very important.

2026-06-26

Arrhythmia

#arrhythmia, #atrial fibrillation, #bradycardia, #tachycardia, #pacemaker, #ventricular fibrillation, #stroke, #anticoagulants, #dizziness, #spinning sensation, #unsteadiness, #vision going dark, #collapse, #loss of consciousness, #fainting, #lack of energy, #lethargy, #persistent fatigue, #rapid heartbeat, #pounding heart, #fast pulse

An arrhythmia is a condition in which the heartbeat is abnormally slow, fast, or irregular. The heart beats about 100,000 times a day to supply blood to the whole body, and when there is a problem with this rhythm, various symptoms may occur. The types and causes of arrhythmia vary, so if you have symptoms, be sure to consult a medical specialist.

2026-06-26

Asthma

#asthma, #bronchi, #allergy, #cough, #wheezing, #shortness of breath, #inhaler, #bronchodilator, #yellow dust, #fine particulate matter, #breathlessness, #difficulty breathing, #labored breathing, #feeling of suffocation, #dry cough, #persistent cough, #cough that won't stop

Asthma is a chronic respiratory condition in which the airways (the passages through which air moves in and out of the lungs) become hypersensitive, often due to allergic reactions, and narrow, causing recurring coughing, wheezing, and shortness of breath. It is sometimes mistaken for a severe cough or cold, which can delay proper treatment. Symptoms can worsen with exposure to yellow dust, fine particulate matter, or pollen. If you have recurring coughing or shortness of breath, please consult a pulmonologist or allergist.

2026-06-26

Blood Cancer

#blood cancer, #leukemia, #multiple myeloma, #platelets, #bone marrow, #anemia, #chemotherapy, #hematopoietic stem cell transplantation

Blood cancer refers to cancer that arises in the bone marrow, the organ responsible for producing blood cells. The bone marrow makes three types of blood cells: white blood cells, red blood cells, and platelets. When the bone marrow malfunctions, abnormalities in the number, shape, or function of these cells can cause a variety of symptoms. Frequent nosebleeds or easy bruising can occur, but these symptoms do not necessarily mean a person has blood cancer. If abnormal results appear on a blood test, please consult a hematology-oncology specialist.

2026-06-26

Chronic Obstructive Pulmonary Disease (COPD)

#COPD, #chronic obstructive pulmonary disease, #airway obstruction, #smoking, #pulmonary function test, #bronchodilator, #smoking cessation, #emphysema, #dry cough, #persistent minor cough, #cough that will not stop

Chronic obstructive pulmonary disease (COPD) is a chronic lung disease in which the airways (the passages through which air travels) gradually narrow, making breathing difficult. The leading cause is smoking. Airways that have narrowed are mostly not restored, so early detection and smoking cessation are especially important. If cough, sputum, or shortness of breath persists, please consult a pulmonology and allergy specialist.

2026-06-26

Cold Urticaria

#cold urticaria, #hives, #cold exposure, #allergy, #cold water, #winter, #headache, #severe headache, #migraine, #back-of-head pain, #breath holding, #difficulty breathing, #shortness of breath, #choking sensation, #body swelling, #facial swelling, #leg swelling, #swelling of the hands and feet

Cold urticaria is a condition in which hives develop upon exposure to cold air, cold water, or ice. In severe cases, dangerous symptoms such as difficulty breathing can occur, so please consult a medical specialist.

2026-06-26

Coronary Artery Disease (Angina and Myocardial Infarction)

#coronary artery disease, #angina, #myocardial infarction, #coronary angiography, #stent, #chest pain, #heart, #collapsing, #loss of consciousness, #passing out, #breathlessness, #difficulty breathing, #labored breathing, #feeling of suffocation, #indigestion, #bloating, #poor digestion, #anxious feeling in the chest, #restlessness, #worrying for no reason

Coronary artery disease is a condition that occurs when the coronary arteries, which supply blood to the heart, become narrowed or blocked. Angina and myocardial infarction are the main types, and myocardial infarction is an emergency that needs prompt treatment. If you have symptoms such as chest pain, seek immediate medical attention.

2026-06-26

Costochondritis

#costochondritis, #thoracic pain, #chest pain, #ribs, #sternum, #cartilage, #anti-inflammatory drugs, #chest ache, #pain in the chest, #chest tightness, #feeling of stuffiness in the chest, #shortness of breath, #difficulty breathing, #labored breathing, #feeling of suffocation, #dry cough, #persistent minor cough, #cough that will not stop

Costochondritis is a condition in which the cartilage that connects the ribs to the breastbone (sternum) becomes inflamed. Chest pain is the main symptom, and because the symptoms can resemble those of pneumothorax or heart disease, an accurate diagnosis is important. If chest pain persists, please consult a medical specialist.

2026-06-26

Croup

#croup, #barking cough, #difficulty breathing, #common cold, #airway swelling, #breath holding, #difficulty breathing, #shortness of breath, #choking sensation, #dry cough, #persistent cough, #cough that won't stop, #body swelling, #facial swelling, #leg swelling, #swelling of the hands and feet

Croup is an emergency condition in which a child suddenly has difficulty breathing. Symptoms typically worsen at night and can become life-threatening, so prompt evaluation by a pediatric specialist or emergency care is needed.

2026-06-26

Deep Vein Thrombosis (DVT)

#deep vein thrombosis, #DVT, #blood clot, #pulmonary embolism, #leg swelling, #economy class syndrome, #dry cough, #persistent cough, #cough that won't stop

Deep vein thrombosis is a condition in which a blood clot (a lump formed when blood coagulates) develops in a deep vein of the leg and blocks the vessel. Leg swelling and pain are the main symptoms, and if the clot travels to the lungs, a dangerous complication called pulmonary embolism can occur. If you suspect symptoms, please consult a medical specialist right away.

2026-06-26

Drug Allergy

#drug allergy, #anaphylaxis, #hives, #adverse drug reaction, #antibiotic allergy, #diagnosis, #prevention, #shortness of breath, #difficulty breathing, #labored breathing, #feeling of suffocation, #body swelling, #facial swelling, #leg swelling, #swollen hands and feet

Drug allergy is a condition in which an allergic reaction occurs after taking a medication. Reactions range from mild ones, such as hives, to life-threatening anaphylaxis. It is important to identify the causative medication accurately and to inform your care team.

2026-06-26

Fine Dust (Particulate Matter) and Health

#particulate matter, #fine particulate matter (PM2.5), #Asian dust (yellow dust), #respiratory system, #mask, #KF80, #KF94, #asthma, #air pollution, #dry cough, #minor cough, #persistent cough

Fine dust consists of tiny particles floating in the air. It directly affects the respiratory tract, including the nose, bronchi, and lungs, and can also harm the whole body, including the heart, brain, and blood vessels, through the bloodstream. Long-term exposure increases the risk of asthma, reduced lung function, and cardiovascular and cerebrovascular disease. On days when fine dust levels are high, limit outdoor activities, and people at high risk are advised to wear a health protection mask.

2026-06-26

Food Allergy

#food allergy, #allergy, #hives, #anaphylaxis, #allergy and respiratory medicine

If you develop hives or shortness of breath after eating a certain food, it may be a food allergy, which can be life-threatening. Please do not take it lightly; be sure to see an allergist or pulmonologist for accurate testing. If you have difficulty breathing, throat tightness, or feel faint after eating, call 119 (Korea's emergency number) immediately, and use your epinephrine auto-injector if one has been prescribed.

2026-06-26

Heart Failure

#heart failure, #dyspnea, #edema, #heart, #obesity, #high blood pressure, #myocardial infarction, #heart medication, #heart failure prevention, #breathlessness, #difficulty breathing, #labored breathing, #feeling of suffocation, #body swelling, #facial swelling, #leg swelling, #swelling in hands and feet

Heart failure is a condition in which the heart cannot supply as much blood as the body needs. With appropriate treatment and management, it is possible to maintain daily life, but if left untreated, symptoms such as shortness of breath and swelling can worsen. If you have risk factors such as high blood pressure, diabetes mellitus, or obesity, please see a medical specialist regularly.

2026-06-26