Hihy Health
Encyclopedia

Facial Flushing

#Facial flushing, #Flushing, #Rosacea, #UV exposure, #Vasodilation, #Face

Facial flushing is a condition in which blood vessels become abnormally widened (dilated), causing the facial skin to redden easily and the redness to persist. Summer heat and strong ultraviolet (UV) light can worsen symptoms. If symptoms persist or worsen, please see a dermatologist.

2026-06-26

Finding the Right Exercise for You

#exercise prescription, #aerobic exercise, #strength training, #osteoporosis, #exercise for diabetes, #exercise for weight loss, #overweight, #swimming, #walking, #exercise stress test

Exercise can help maintain health and prevent disease, but exercise that does not suit your health status and goals can do more harm than good. Choose the type, intensity, and frequency of exercise to suit your condition, and if you have a medical condition, it is advisable to obtain an exercise prescription from a medical specialist.

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

Flat Feet (Pes Planus)

#flat feet, #foot arch, #foot and ankle, #foot fatigue, #foot pain, #posterior tibial tendon, #orthotic insole, #low energy, #lethargy, #persistent tiredness

Flat feet refers to a condition in which the arch of the foot — the inward curve along the sole — is so low that it touches the ground. The arch normally acts like a spring, absorbing shock to the foot during walking or running. If symptoms persist, please consult a medical specialist.

2026-06-26

Flu (Influenza)

#Flu, #Influenza, #Flu vaccination, #Common cold, #Influenza vaccine, #Quadrivalent vaccine, #Pneumonia, #Sore throat, #Scratchy throat, #Pain when swallowing, #Dry cough, #Lingering cough, #Cough that won't stop, #Stuffy nose, #Clear runny nose, #Yellow nasal discharge

The flu (influenza) is a respiratory infection caused by the influenza virus, and its cause and symptoms differ from those of the common cold. Annual vaccination is recommended each fall (September to November). If you develop symptoms such as high fever or severe muscle aches, please see a medical specialist.

2026-06-26

Fluid Intake and Health

#fluid intake, #water, #empty stomach, #bowel movement, #dehydration, #health drinks, #digestion

The body keeps its fluid balance by triggering thirst when fluid is low and excreting excess fluid in the urine. Rather than following a fixed standard, the basic principle is to drink enough when you feel thirsty. Drinking water on an empty stomach in the morning can replace fluid used up overnight and may help bowel movement.

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

Foot Health and Choosing the Right Shoes

#shoe selection, #foot health, #high heels, #proper footwear, #foot care, #foot, #lack of energy, #lethargy, #persistent fatigue

Choosing appropriate shoes and taking good care of your feet can help prevent various foot problems. If you notice any problems with your feet, please consult a medical specialist.

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

Frostbite

#Frostbite, #Cold-related illness, #Chilblains, #Cold wave, #Necrosis, #Fingers, #Toes, #Winter health

Frostbite occurs when body tissue exposed to severe cold freezes. It most often affects exposed areas such as the fingers, toes, nose, and ears. In severe cases, the tissue can undergo necrosis (tissue death), which may require amputation of the affected body part. If you suspect frostbite, protect the area from refreezing and seek medical care right away.

2026-06-26

Frozen Shoulder (Adhesive Capsulitis)

#frozen shoulder, #adhesive capsulitis, #shoulder pain, #shoulder stiffness, #limited shoulder movement

Frozen shoulder is a condition in which the joint capsule surrounding the shoulder joint becomes inflamed and the shoulder joint stiffens. Its medical name is 'adhesive capsulitis.' 'Adhesion' means that tissues stick together. If you have shoulder pain, please do not judge the cause on your own; consult a medical specialist.

2026-06-26