Hihy Health
Encyclopedia

Aortic Dissection

#Aortic dissection, #Chest pain, #Aorta, #Emergency, #High blood pressure, #Cardiothoracic surgery, #Vascular graft, #Stent, #Acute aortic dissection, #Chest ache, #Tight chest, #Chest tightness, #Weakness in arms or legs, #One-sided weakness

Aortic dissection is a medical emergency in which the wall of the aorta — the largest artery in the body — tears starting from its inner layer. It is marked by the sudden onset of severe, stabbing chest pain. Without prompt treatment, it can be life-threatening. If these symptoms occur, please call emergency services (119 in Korea) right away and go to the emergency room.

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

Athlete's Foot (Tinea)

#athlete's foot, #tinea pedis, #fungal infection, #fungus, #antifungal agents, #onychomycosis, #ringworm

Athlete's foot is a common fungal skin infection. It is a skin condition caused by a fungus called a dermatophyte infecting the foot. It occurs easily in hot, humid environments such as summer and is contagious. It can occur not only on the feet but also in many other areas, including the nails, groin, and scalp.

2026-06-26

Atlantoaxial Instability (Cervical Instability)

#cervical instability, #first cervical vertebra (C1), #second cervical vertebra (C2), #cervical disc herniation, #cervical spine surgery, #rheumatoid arthritis, #cervical fusion, #spinal cord, #numbness in hands and feet, #arm numbness, #tingling leg, #weakness in arms and legs, #difficulty moving one side of the body, #anxious feeling in the chest, #restlessness, #worrying for no reason

Cervical instability (atlantoaxial instability) is a condition in which the connection between the first and second neck bones (cervical vertebrae) becomes loose and allows excessive movement. Mild cases may cause no symptoms, but as it progresses it can compress the spinal cord and lead to serious nerve damage. It is relatively common in patients with rheumatoid arthritis. Please be sure to decide on an accurate diagnosis and treatment approach through a medical specialist.

2026-06-26

Atopic Dermatitis

#atopic dermatitis, #allergy, #itching, #eczema, #pollen, #house dust mites, #moisturizing, #steroid ointment

Atopic dermatitis is a chronic skin condition in which allergic mechanisms cause ongoing inflammation of the skin. It causes severe itching and recurring eczema, and the skin can become thick and rough (lichenification). It tends to occur when a person with a genetic predisposition is exposed to allergy triggers, and symptoms can worsen with spring pollen, house dust mites, and fine particulate matter. If symptoms persist, please consult an allergist or a dermatologist.

2026-06-26

Basal Cell Carcinoma

#basal cell carcinoma, #skin cancer, #ultraviolet rays, #skin, #tumor, #mole

Basal cell carcinoma is the most common skin cancer. It mainly occurs in areas with long-term ultraviolet exposure, and the outlook is generally favorable when it is completely removed by surgery. If you have an area of skin that has not healed for a long time or keeps changing, please be sure to consult a dermatologist.

2026-06-26

Benign Paroxysmal Positional Vertigo (BPPV)

#benign paroxysmal positional vertigo, #BPPV, #dizziness, #vertigo, #vestibular system, #semicircular canals, #canalith repositioning, #ear, #balance, #feeling dizzy, #spinning sensation, #unsteadiness, #feeling faint, #nausea, #feeling like vomiting, #vomiting, #ringing in the ear, #tinnitus, #hearing loss, #difficulty hearing

Benign paroxysmal positional vertigo (BPPV) occurs when tiny particles called otoconia become dislodged from the balance organ of the inner ear (the vestibular system) and enter the semicircular canals. Otoconia are small crystals made of calcium carbonate, sometimes described as "ear stones." The main symptom is a spinning sensation that occurs with changes in head position. If you experience dizziness, please consult an ENT specialist.

2026-06-26

Benign Prostatic Hyperplasia (BPH)

#benign prostatic hyperplasia, #prostate, #lower urinary tract symptoms, #frequent urination, #nocturia, #urinary urgency, #sense of incomplete bladder emptying, #acute urinary retention, #alpha-blocker, #transurethral resection of the prostate, #headache, #a splitting headache, #migraine, #back-of-head pain, #urinating frequently, #frequent trips to the bathroom, #blood in urine, #red urine, #bloody urine

Benign prostatic hyperplasia (BPH) is a very common condition in men in which the prostate enlarges with age, narrowing the urethra and causing urinary symptoms. The prevalence rises with age, affecting about 50% of men in their 50s and 60% of men in their 60s. Without treatment, it can lead to complications such as acute urinary retention or kidney failure, so if you have symptoms, please consult a urologist.

2026-06-26

Biliary Tract Cancer

#biliary tract cancer, #cholangiocarcinoma, #gallbladder cancer, #jaundice, #liver fluke, #bile duct stones, #painless jaundice

Biliary tract cancer is a malignant tumor that develops in the bile ducts, through which bile flows, or in the gallbladder. It mainly occurs in people in their 60s and older, and it is often found when jaundice appears after a period without symptoms. The earlier it is detected, the better the outlook for treatment, so if you have risk factors, please have regular checkups.

2026-06-26

Biological Age and Health Age

#biological age, #health age, #physiological age, #aging, #health checkup, #lifestyle habits, #metabolism, #health risk assessment

Biological age is an estimate of the degree of aging, expressed as a number, based on health indicators such as blood pressure, blood glucose, and liver function. Health age is an age that reflects health risk factors such as lifestyle habits and family history. Neither measure is a definitive diagnostic tool, but both can be used to motivate people to adopt healthier lifestyle habits.

2026-06-26

Bladder Cancer

#bladder cancer, #hematuria, #cystoscopy, #transurethral resection, #radical cystectomy, #BCG, #cancer immunotherapy, #smoking, #renal pelvis cancer, #ureteral cancer, #stomachache, #abdominal pain, #belly ache, #gut pain, #fever, #feeling hot, #high fever, #low-grade fever, #body swelling, #facial swelling, #leg swelling, #swollen hands and feet, #frequent urination, #frequent bathroom visits, #blood in urine, #red urine, #bloody urine

Bladder cancer is a malignant tumor that develops in the inner lining of the bladder. In the early stages, treatment that preserves the bladder is often possible, but in advanced cases the bladder may need to be removed. Early detection is very important for treatment outcomes. If you have suspicious symptoms such as blood in the urine, be sure to consult a medical specialist.

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

Blueberries

#blueberry, #antioxidant, #anthocyanin, #constipation, #colon, #vision, #blood circulation, #aging, #unable to pass stool, #difficulty passing stool, #hard stools

Blueberries are a fruit rich in antioxidants and have been associated with various potential health benefits. With a balance of sweetness and tartness, they taste good and can be enjoyed in many ways.

2026-06-26