Hihy Health
Encyclopedia

Heat Waves and Heart Health

#heat wave, #sudden cardiac death, #heat stroke, #heat-related illness, #heart attack, #angina, #cardiac arrest, #arrhythmia, #hydration, #summer health, #dizziness, #feeling faint, #unsteadiness, #vision going dark, #fainting, #loss of consciousness, #syncope, #breath holding, #difficulty breathing, #shortness of breath, #choking sensation

Extreme heat raises the risk of angina, heart attack, and cardiac arrest by increasing heart rate, promoting blood clotting, and placing added strain on the heart. Older adults age 65 and older, people with cardiovascular disease, and those with chronic conditions such as high blood pressure or diabetes need to be especially careful. On days when a heat wave warning is issued, please stay active indoors for safety.

2026-06-26

Hypertension (High Blood Pressure)

#hypertension, #blood pressure, #blood pressure medication, #sodium, #arteriosclerosis, #antihypertensive drugs, #essential hypertension, #headache, #a splitting headache, #migraine, #back-of-head pain

Hypertension is a condition in which blood pressure, the force exerted on the walls of the blood vessels when the heart pumps out blood, stays persistently high; it is classified as a systolic blood pressure of 140 mmHg or higher or a diastolic blood pressure of 90 mmHg or higher. Hypertension often causes no symptoms, so it is called the "silent killer." If left untreated, it can lead to serious complications such as stroke, heart disease, and kidney disease, so evaluation by a medical specialist and steady management are needed.

2026-06-26

Iron Deficiency Anemia

#anemia, #iron deficiency anemia, #iron, #hemoglobin, #iron supplement, #fatigue, #pallor, #dizziness, #women of childbearing age, #fainting, #loss of consciousness, #syncope, #low energy, #lethargy, #persistent tiredness, #indigestion, #bloating, #upset stomach, #loose stools, #watery diarrhea, #frequent bowel movements, #constipation, #difficulty passing stool, #hard stool, #double vision, #overlapping vision

Iron deficiency anemia is a condition in which a lack of iron in the body leads to a shortage of red blood cells. Common symptoms include pallor, fatigue, dizziness, and shortness of breath during exercise. It occurs especially frequently in women of childbearing age. If anemia persists for a long time, it can place strain on the heart, so identifying the cause and receiving appropriate treatment is important. If you suspect these symptoms, please consult a hematology-oncology specialist.

2026-06-26

Kidney Transplant Process

#kidney transplantation, #kidney transplant, #living-donor kidney transplantation, #deceased-donor kidney transplantation, #immunosuppressants, #rejection, #end-stage kidney failure, #KONOS, #organ transplantation, #double vision, #overlapping images

Kidney transplantation is a surgery that transplants a healthy kidney into the body to replace a kidney that has lost its function. Unlike dialysis, it can restore most of the kidney's various functions (removing waste products, regulating electrolytes, secreting hormones that stimulate blood cell production, and others), which makes it one of the main treatment options for end-stage kidney failure. Whether and how to have a transplant depends on each patient's health condition, so please be sure to decide through consultation with a medical specialist.

2026-06-26

Macular Degeneration

#macular degeneration, #macula, #retina, #decreased vision, #eye injection, #dry macular degeneration, #wet macular degeneration, #lutein, #blurry vision, #difficulty seeing, #hazy vision

Macular degeneration is a condition in which the macula — the central part of the retina — is damaged, leading to decreased vision. In severe cases it can lead to blindness, but early detection and consistent treatment can help slow its progression. If you are 50 or older, please have regular retinal examinations.

2026-06-26

Meniere's Disease

#Meniere's disease, #dizziness, #hearing loss, #tinnitus, #inner ear, #vestibular organ, #endolymph, #aural fullness, #lightheadedness, #spinning sensation, #unsteadiness, #vision going dark, #nausea, #feeling about to vomit, #vomiting, #blurry vision, #difficulty seeing, #hazy vision, #ringing in the ears, #noise in the ear, #cannot hear, #difficulty hearing sounds

Meniere's disease is a condition in which excess endolymph builds up in the inner ear, raising the pressure and causing repeated episodes of dizziness, hearing loss, tinnitus, and a feeling of fullness in the ear. The inner ear is the innermost part of the ear and consists of the cochlea, which is responsible for hearing, and the vestibular organ, which is responsible for balance. If left untreated, hearing and vestibular function may worsen permanently. Please consult an otolaryngology (ENT) specialist.

2026-06-26

Meningioma

#meningioma, #brain tumor, #benign tumor, #Gamma Knife, #neurosurgery, #weakness in the arms or legs, #difficulty moving one side of the body

Meningioma is, in most cases, a slow-growing benign tumor. The timing and method of treatment that suit you should be decided carefully in consultation with a neurosurgery specialist.

2026-06-26

Noise-Induced Hearing Loss

#noise-induced hearing loss, #earphones, #tinnitus, #cochlea, #hearing damage, #noise, #hearing, #headphones, #double vision, #overlapping images, #ringing in the ear, #noise in the ear, #cannot hear, #difficulty hearing

Noise-induced hearing loss is a condition in which hearing is damaged by loud, sustained sound exposure. It once occurred mainly in industrial workplaces, but it is now increasing among teenagers and young adults as the use of personal audio devices such as earphones grows. There is currently no treatment that restores hearing once it has been damaged, so prevention is most important. If your hearing declines or you develop tinnitus, please consult an ENT specialist.

2026-06-26

Orthostatic Hypotension

#orthostatic hypotension, #dizziness, #syncope, #autonomic nervous system, #blood pressure, #lightheadedness, #headache, #a splitting headache, #migraine, #back-of-head pain, #feeling dizzy, #spinning sensation, #unsteadiness, #feeling faint, #collapsing, #loss of consciousness, #passing out, #fainting, #lack of energy, #listlessness, #feeling tired all the time

Orthostatic hypotension is a condition in which blood pressure drops sharply when a person suddenly stands up from sitting or lying down, causing dizziness, fainting, and other symptoms. It can also occur in people with high blood pressure. Some studies link it to an increased risk of dementia, so if symptoms recur, please consult a medical specialist.

2026-06-26

Otitis Media in Children

#otitis media, #ear pain, #hearing loss, #common cold, #pediatric otitis media, #stuffy nose, #clear runny nose, #yellow runny nose, #blurry vision, #difficulty seeing, #hazy vision, #cannot hear, #difficulty hearing

If a child complains of ear pain or has trouble hearing after a cold, it may be otitis media. Because hearing development can be affected, please be sure to consult an ENT specialist.

2026-06-26

Pituitary Tumor

#pituitary gland, #pituitary tumor, #pituitary adenoma, #decreased vision, #visual field defect, #acromegaly, #Cushing's syndrome, #amenorrhea, #brain tumor, #blurry vision, #difficulty seeing, #hazy vision, #seeing double, #overlapping images

A pituitary tumor is a tumor that develops in the pituitary gland, a small organ in the middle of the brain. Most are benign tumors and are not cancer. As the tumor grows or hormone secretion is disrupted, various symptoms can appear, so if you have suspected symptoms, please consult a medical specialist.

2026-06-26

Presbyopia

#presbyopia, #lens, #reading glasses, #accommodation, #near vision, #multifocal lenses, #presbyopia surgery, #headache, #splitting headache, #migraine, #pain at the back of the head

Presbyopia is a condition in which the lens inside the eye loses elasticity with age, making it hard to see things up close. It is a natural part of aging that begins to appear in the early to mid 40s. If you have troublesome symptoms, please consult an ophthalmology specialist.

2026-06-26

Retinal Artery Occlusion

#retinal artery occlusion, #retina, #decreased vision, #eye stroke, #central retinal artery occlusion, #high blood pressure, #diabetes, #blurry vision, #difficulty seeing, #hazy vision

Retinal artery occlusion is a condition in which the artery that supplies blood to the retina is suddenly blocked. Like a stroke, in which a blood vessel in the brain is blocked, it damages the nerve cells involved in vision, and it is sometimes called an 'eye stroke.' If sudden vision loss occurs, seek immediate medical attention at an emergency room or ophthalmology department.

2026-06-26

Strabismus

#strabismus, #exotropia, #esotropia, #intermittent exotropia, #amblyopia, #stereopsis (3D vision), #diplopia, #strabismus surgery, #head pain, #splitting headache, #migraine, #pain at the back of the head, #double vision, #overlapping images

Strabismus is an eye movement disorder in which the two eyes cannot look at the same point together. One eye may turn in a different direction, which can reduce the ability to see objects in three dimensions. If you suspect symptoms, please consult an eye specialist (ophthalmologist).

2026-06-26

Structure and Function of the Brain

#brain, #cerebrum, #cerebellum, #brainstem, #frontal lobe, #hippocampus, #neuroplasticity, #neuron, #dry cough, #persistent minor cough, #cough that will not stop

The brain is the most important organ in the body. It processes all sensory information, regulates bodily functions, and is responsible for mental activities such as memory, thinking, and emotion. It is broadly divided into the cerebrum, cerebellum, and brainstem, and each part has a specific role.

2026-06-26