Hihy Health
Encyclopedia

Acute Fatigue

#fatigue, #chronic fatigue, #acute fatigue, #stress, #sleep, #anemia, #thyroid, #lack of energy, #listlessness, #feeling tired all the time, #anxious feeling in the chest, #restlessness, #worrying for no reason

Fatigue is a state in which the whole body feels weak, or tasks that are usually easy feel exhausting. It is classified as acute if it lasts less than 1 month and chronic if it lasts 3 months or longer. The causes of fatigue are very diverse, so if fatigue lasts 1 to 2 weeks or longer despite enough rest, please consult a medical 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

Early-Onset Dementia (Young-Onset Dementia)

#early-onset dementia, #young-onset dementia, #alcohol-related dementia, #lifestyle diseases, #vascular dementia

Dementia is not a disease that affects only older adults. Dementia that develops at a relatively young age, between 45 and 65, is called early-onset (presenile) dementia. Because it tends to progress faster than dementia in older adults, please consult a medical specialist without delay if symptoms occur.

2026-06-26

Forgetfulness and Dementia

#forgetfulness, #dementia, #mild cognitive impairment, #memory, #brain cells, #stress, #trouble falling asleep, #frequent waking, #poor sleep quality

It can be difficult to tell whether forgetfulness is simple age-related forgetfulness or a sign of dementia. Forgetfulness is a normal experience, but dementia is a brain disease. Rather than judging this on your own, please consult a medical specialist if you notice any concerning symptoms.

2026-06-26

Headache

#Headache, #Migraine, #Tension-type headache, #Cerebral hemorrhage, #Stress, #Sleep disorder, #Caffeine, #Neurology, #Head pain, #Splitting headache, #Pain at the back of the head, #Weakness in arms or legs, #One-sided weakness, #Seeing double, #Overlapping vision, #Trouble falling asleep, #Waking up often, #Not sleeping deeply

Headache is a common symptom that almost anyone can experience, but it can also be a sign of a brain condition or a nervous system problem. If you find yourself relying too heavily on pain relievers to get rid of headaches, or if headaches are interfering with daily life, please don't try to judge the cause yourself — see a medical specialist.

2026-06-26

Hypothermia

#hypothermia, #cold-related illness, #cold wave, #body temperature, #core temperature, #frostbite, #winter health, #hand tremor, #body tremor

Hypothermia refers to a drop in core body temperature to 35°C or below. The lower the body temperature falls, the more dangerous the condition becomes, and in severe cases it can lead to cardiac arrest. It can occur with prolonged exposure to extreme cold or cold environments, and extra caution is needed when alcohol has been consumed. If hypothermia is suspected, please call 119 immediately or go to a hospital.

2026-06-26

Sleep Disorders and Dementia

#sleep disorders, #dementia, #insomnia, #sleep apnea, #REM sleep, #restless legs syndrome, #Alzheimer's disease, #cognitive function, #lack of energy, #fatigue, #feeling tired all the time, #cannot fall asleep, #waking up often, #cannot sleep deeply, #anxious feeling in the chest, #restlessness, #worrying for no reason

Sleep is an important time for the brain to recover from fatigue and organize memories. Sleep disorders are more than a simple inconvenience; they are associated with cognitive decline and an increased risk of dementia. If sleep problems persist, please consult a medical specialist.

2026-06-26

Stroke

#stroke, #dementia, #vascular dementia, #high blood pressure, #snoring, #weakness in the arms or legs, #difficulty moving one side of the body

Stroke is a medical emergency that occurs when a blood vessel in the brain becomes blocked or ruptures. A blocked blood vessel is called a cerebral infarction, and a ruptured one is called a cerebral hemorrhage. If symptoms appear, going to the emergency room immediately is the most important way to reduce aftereffects. Stroke is also closely related to dementia. The main symptom of stroke is the loss of a specific bodily function, such as paralysis of the arms or legs. The most important factor in treatment is the golden time (the critical time window for treatment), so please be sure to consult a medical specialist for an accurate diagnosis. If abnormal symptoms appear, call 119 (Korea's emergency number) or go to the emergency room immediately.

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