Hihy Health
Encyclopedia

Air-Conditioning Sickness

#air-conditioning sickness, #air conditioner, #temperature difference, #Legionella, #summer health, #head pain, #fatigue, #indoor ventilation, #stomachache, #tummy ache, #bellyache, #pain inside the abdomen, #headache, #splitting headache, #migraine, #pain at the back of the head, #body shaking, #feeling cold and shivering, #cold sensation, #lack of energy, #listlessness, #persistent tiredness, #loose stools, #watery diarrhea, #frequent bathroom visits, #unable to pass stool, #difficulty having a bowel movement, #hard stools, #hand tremor, #body tremor

Air-conditioning sickness is a general term for the various physical symptoms that appear when air conditioners or other cooling devices are overused and the temperature difference between indoors and outdoors becomes large. It is not an officially defined medical diagnosis, but headache, fatigue, and digestive problems may occur. In most cases, symptoms may improve within a few days if use of cooling devices is reduced. If symptoms are severe or accompanied by a high fever, please consult a medical specialist.

2026-06-26

Cholinergic Urticaria

#cholinergic urticaria, #hives, #exercise, #sweating, #body temperature, #allergy, #stinging sensation, #abdominal pain, #stomachache, #abdominal discomfort, #stomach pain

Cholinergic urticaria is a condition in which numerous small hives appear on the skin when body temperature rises, such as from strenuous exercise, mental stress, or a hot bath. Please consult a dermatology specialist.

2026-06-26

Chronic Fatigue Syndrome

#chronic fatigue syndrome, #antidepressants, #cognitive behavioral therapy, #exercise therapy, #chronic fatigue, #fatigue, #sleep disorder, #depression, #rehabilitation, #headache, #splitting headache, #migraine, #pain at the back of the head, #lack of energy, #listlessness, #persistent tiredness

Chronic fatigue syndrome is a condition in which severe fatigue persists for 3 months or longer even with adequate rest. Because there are many hypotheses about its cause, treatment is tailored to each individual. Antidepressants, cognitive behavioral therapy, and graded exercise therapy have been reported to be helpful. Please consult a medical specialist before deciding on the direction of treatment.

2026-06-26

Chronic Hepatitis B

#hepatitis B, #chronic hepatitis B, #cirrhosis, #liver cancer, #antiviral drugs, #vaccination, #vertical transmission, #lack of energy, #listlessness, #persistent tiredness, #loose stools, #watery diarrhea, #frequent bathroom visits

Hepatitis B is an infection caused by the hepatitis B virus. If chronic hepatitis B is not treated, it can progress to cirrhosis and liver cancer. People without antibodies should get vaccinated. If you have chronic hepatitis B, please have regular checkups and consult a medical specialist about treatment.

2026-06-26

Chronic Kidney Disease (CKD)

#chronic kidney disease, #chronic renal failure, #kidney, #renal, #proteinuria, #glomerular filtration rate, #diabetic nephropathy, #lack of energy, #listlessness, #persistent tiredness, #body swelling, #facial swelling, #leg swelling, #swollen hands and feet

Chronic kidney disease (CKD) is a condition in which abnormalities in kidney function or structure persist for 3 months or longer. In the early stages there are often no particular symptoms, so the disease may go unnoticed and be discovered only after it has progressed considerably. People who have diabetes or high blood pressure, or who have a family history of kidney disease, need regular testing. If a health checkup reveals a kidney abnormality, please consult a medical specialist to confirm it.

2026-06-26

Drug Treatment for Rheumatoid Arthritis

#rheumatoid arthritis, #antirheumatic drugs, #biologics, #JAK inhibitors, #small molecule inhibitors, #methotrexate, #targeted therapy, #immunosuppressants

Rheumatoid arthritis is a chronic disease in which the immune system attacks the body's own joints and causes inflammation. After diagnosis, drug treatment is started to reduce inflammation and slow disease progression. In recent years, in addition to conventional antirheumatic drugs, a variety of targeted therapies have come into use, including biologics and small molecule inhibitors (JAK inhibitors). Because each drug has different characteristics and side effects, please discuss treatment options thoroughly with your doctor before deciding on the approach that is right for you.

2026-06-26

Dry Eye Disease

#dry eye disease, #dry eye, #tears, #foreign body sensation, #artificial tears, #blepharitis, #lack of energy, #listlessness, #persistent tiredness, #anxious feeling, #nervousness, #worrying for no reason

Dry eye disease is a condition in which the surface of the eye becomes dry because there are not enough tears or the tears evaporate too quickly. It causes a variety of symptoms, such as stinging, dryness, and a feeling that something is in the eye. If symptoms are severe or persist, please consult an ophthalmology specialist.

2026-06-26

Early Detection and Management of Liver Disease

#liver disease, #liver cancer, #cirrhosis, #hepatitis B, #hepatitis C, #fatty liver, #nonalcoholic steatohepatitis, #hepatectomy, #minimally invasive surgery, #early screening, #alcohol abstinence, #lack of energy, #listlessness, #persistent tiredness, #nausea, #feeling about to vomit, #vomiting

The liver is a 'silent organ.' Even as damage progresses, there are no obvious symptoms in the early stage, so fatigue, loss of appetite, and weight loss are often dismissed as minor, and the disease is often discovered only after it has progressed to cirrhosis or liver cancer. Regular checkups are the most important way to protect liver health.

2026-06-26

Epidemic Keratoconjunctivitis

#epidemic keratoconjunctivitis, #eye infection, #adenovirus, #conjunctivitis, #redness, #eyelid swelling, #contagious, #fever, #having a fever, #high fever, #low-grade fever, #body swelling, #facial swelling, #leg swelling, #swelling in hands and feet

Epidemic keratoconjunctivitis (EKC) is a highly contagious eye infection caused by adenovirus. It occurs most often in summer, and symptoms include eye redness, a foreign body sensation, and eyelid swelling. Personal hygiene is important, and if symptoms appear, please consult an ophthalmologist.

2026-06-26

Eye Health Care for Contact Lens Wearers

#contact lenses, #soft lenses, #rigid (hard) lenses, #keratitis, #lens care, #lens cleaning, #swimming, #body swelling, #facial swelling, #leg swelling, #swelling of the hands and feet

Because contact lenses sit directly on the cornea, improper use can lead to serious eye conditions such as keratitis and dry eye disease. Proper use and hygiene are important. If any unusual symptoms occur, please see an ophthalmology specialist right away.

2026-06-26

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

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

Glaucoma

#glaucoma, #optic nerve, #intraocular pressure, #visual field loss, #normal-tension glaucoma, #how to use eye drops, #headache, #splitting headache, #migraine, #pain at the back of the head, #lack of energy, #listlessness, #persistent tiredness

Glaucoma is a disease in which the optic nerve inside the eye is gradually damaged by high intraocular pressure or other factors, causing the visual field to narrow progressively. There are almost no symptoms in the early stage, so detection can be delayed, and rather than a cure, lifelong consistent management is important. Detecting it early through regular checkups and starting treatment is the best way to help prevent blindness.

2026-06-26

Heat-Related Illness

#heat-related illness, #heat stroke, #heat exhaustion, #heat cramps, #heat edema, #heat wave, #dehydration, #summer health, #headache, #splitting headache, #migraine, #pain at the back of the head, #lack of energy, #listlessness, #persistent tiredness, #body swelling, #facial swelling, #leg swelling, #swollen hands and feet

Heat-related illness is an acute emergency condition that occurs after prolonged exposure to a hot environment. It can cause headache, dizziness, muscle cramps, and, in severe cases, decreased consciousness. People who work outdoors, older adults, and children need to take particular care. If symptoms appear, move to a cool place immediately, and if heat stroke is suspected, call 119 (Korea's emergency number) right away. Please consult a medical specialist.

2026-06-26

Hepatitis A

#hepatitis A, #hepatitis, #acute hepatitis, #hepatitis vaccination, #contaminated food, #jaundice, #liver function, #feeling feverish, #body heat, #high fever, #low-grade fever, #lack of energy, #listlessness, #persistent tiredness

Hepatitis A is an acute infectious disease caused by the hepatitis A virus. It is spread through contaminated food or water, and most people recover. It does not progress to chronic hepatitis, but in rare cases it can take a serious course. People who do not have antibodies should be vaccinated.

2026-06-26