Hihy Health
Encyclopedia

Acute Cerebral Infarction (Ischemic Stroke)

#cerebral infarction, #acute cerebral infarction, #blood clot, #thrombectomy, #FAST

Acute cerebral infarction is a very urgent condition in which a blocked blood vessel in the brain damages brain cells. Time is critical, and rapid recognition and emergency treatment are most important, so please seek immediate medical attention.

2026-06-26

ADHD (Attention-Deficit/Hyperactivity Disorder)

#ADHD, #inattention, #hyperactivity disorder, #concentration, #impulsivity, #children and adolescents, #dopamine

ADHD (attention-deficit/hyperactivity disorder) is a neurodevelopmental condition whose main symptoms are inattention, hyperactivity, and impulsivity. It mainly appears in childhood and adolescence, but it can continue into adulthood. If you suspect symptoms, please consult a medical specialist for an examination and evaluation.

2026-06-26

Alcoholism (Alcohol Use Disorder)

#alcoholism, #alcohol use disorder, #drinking, #alcohol abstinence, #detoxification treatment, #sobriety, #relapse prevention, #craving, #hand tremor, #body tremor, #anxious feeling, #nervousness, #worrying for no reason

Alcoholism (alcohol use disorder) is a chronic mental health condition in which drinking beyond socially accepted levels impairs physical, psychological, and social functioning. It results from a loss of the brain's control over drinking, not from a lack of willpower. Recovery may be possible with professional treatment, so please do not hesitate to ask for help.

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

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

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

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

Burnout and Stress Management

#burnout, #stress, #exhaustion, #sleep, #mindfulness, #goal management, #workplace, #mental health, #lack of energy, #lethargy, #persistent fatigue

Burnout (exhaustion) is not simply a matter of fatigue or lack of willpower. It is a state in which accumulated chronic stress is thought to reduce the brain's ability to regulate itself. Rather than simply 'enduring' it, management aimed at helping the brain recover is needed. It is important to recognize the early signs of burnout and find your own ways to manage stress.

2026-06-26

Cardiac Arrest

#cardiac arrest, #cardiopulmonary resuscitation, #golden time, #targeted temperature management, #automated external defibrillator

Cardiac arrest is a life-threatening emergency in which the heart stops and cannot pump blood to the body. Calling 119, prompt cardiopulmonary resuscitation (CPR) by bystanders, and treatment by an emergency medicine specialist are key to saving the patient's life.

2026-06-26

Cerebral Aneurysm

#cerebral aneurysm, #subarachnoid hemorrhage, #headache, #cerebral blood vessels, #coil embolization, #surgical clipping, #brain hemorrhage, #MRA, #CTA, #head pain, #splitting headache, #migraine, #pain at the back of the head, #double vision, #overlapping images

A cerebral aneurysm is a condition in which the wall of a blood vessel in the brain becomes abnormally thin and bulges outward. Before it ruptures, it usually causes no symptoms and is sometimes found by chance during a health checkup. Because a rupture can become a life-threatening emergency, people with risk factors are advised to talk with their doctor about regular screening. If a health checkup shows an abnormal finding, please consult a neurosurgery specialist, and if a sudden, severe headache occurs, seek immediate medical attention at an emergency room.

2026-06-26

Cerebral Hemorrhage

#cerebral hemorrhage, #stroke, #cerebral infarction, #intracranial pressure, #blood pressure management, #emergency surgery, #headache, #splitting headache, #migraine, #pain at the back of the head, #body swelling, #facial swelling, #leg swelling, #swollen hands and feet, #weakness in the arms or legs, #difficulty moving one side of the body

Cerebral hemorrhage is a medical emergency in which a blood vessel in the brain ruptures and bleeding occurs. Blood pressure management is the most important way to prevent it, and if symptoms occur, you should go to the emergency room immediately.

2026-06-26

Cerebrovascular Disease (Stroke)

#stroke, #cerebral infarction, #cerebral hemorrhage, #thrombolysis, #thrombectomy, #cerebrovascular disease, #winter stroke, #first aid, #post-stroke sequelae, #multidisciplinary care, #headache, #splitting headache, #migraine, #pain at the back of the head, #lightheadedness, #spinning sensation, #unsteadiness, #vision going dark, #weakness in the arms or legs, #difficulty moving one side of the body

Cerebrovascular disease (stroke) is a condition in which a blood vessel in the brain becomes blocked or ruptures, causing brain damage. To minimize aftereffects, prompt emergency response is most important, under the principle that 'time is brain.' The risk of stroke is especially high in winter and during seasonal changes, so please follow the prevention guidelines carefully.

2026-06-26

Childhood Obesity

#childhood obesity, #adolescent obesity, #pediatric metabolic syndrome, #growth, #weight management, #eating habits, #exercise, #loose stools, #watery diarrhea, #frequent bathroom visits

Childhood obesity is a condition in which excess body fat accumulates in children and adolescents. It may continue into adulthood and increases the risk of high blood pressure, diabetes, and hyperlipidemia. Early management is important, especially at younger ages. Please talk with a medical specialist and follow a plan that combines dietary changes, exercise, and lifestyle improvements.

2026-06-26

Chronic Renal Failure

#kidney transplantation, #chronic renal failure, #kidney, #end-stage renal disease, #hemodialysis, #immunosuppressants

The kidneys are important organs that filter waste products from the body and remove them in the urine. When a chronic disease has damaged the kidneys completely, a new kidney may need to be transplanted to sustain life. Lifelong careful management is needed even after transplantation, so please do not rely on this Health Encyclopedia alone; receive proper management through consultation with a transplant specialist.

2026-06-26

Dementia Prevention

#dementia prevention, #three do's and three don'ts, #depression, #stress, #aerobic exercise

Dementia does not appear suddenly; it results from harmful changes that accumulate in the brain over a long period of time. Building good habits in daily life from a young age is the best way to help prevent it. Making an ongoing effort to protect one's own health is especially important. If you or a loved one notices signs of memory loss or other cognitive changes, please consult a medical specialist.

2026-06-26