Hihy Health
Encyclopedia

Allergic Conjunctivitis

#allergic conjunctivitis, #allergy, #itchy eyes, #red eyes, #pollen, #conjunctivitis, #stuffy nose, #clear runny nose, #yellow runny nose

Allergic conjunctivitis is a condition in which the conjunctiva of the eye becomes inflamed in response to allergens such as pollen and fine dust. It is characterized by itchy, red eyes. If symptoms are severe or persist, please consult an ophthalmology specialist.

2026-06-26

Allergic Rhinitis

#allergic rhinitis, #rhinitis, #sneezing, #runny nose, #nasal congestion, #house dust mites, #pollen, #seasonal change, #headache, #splitting headache, #migraine, #pain at the back of the head, #stuffy nose, #clear runny nose, #yellow runny nose

Allergic rhinitis is a condition in which the nasal mucosa reacts excessively to certain substances (allergens). The main symptoms are sudden bouts of sneezing, clear runny nose, stuffy nose, and itching. According to the Korea National Health and Nutrition Examination Survey, about 18% of Koreans experience it. The incidence is especially high among teenagers. If symptoms persist or complications are suspected, please consult an otolaryngology (ENT) specialist.

2026-06-26

Athlete's Foot (Tinea)

#athlete's foot, #tinea pedis, #fungal infection, #fungus, #antifungal agents, #onychomycosis, #ringworm

Athlete's foot is a common fungal skin infection. It is a skin condition caused by a fungus called a dermatophyte infecting the foot. It occurs easily in hot, humid environments such as summer and is contagious. It can occur not only on the feet but also in many other areas, including the nails, groin, and scalp.

2026-06-26

Atopic Dermatitis

#atopic dermatitis, #allergy, #itching, #eczema, #pollen, #house dust mites, #moisturizing, #steroid ointment

Atopic dermatitis is a chronic skin condition in which allergic mechanisms cause ongoing inflammation of the skin. It causes severe itching and recurring eczema, and the skin can become thick and rough (lichenification). It tends to occur when a person with a genetic predisposition is exposed to allergy triggers, and symptoms can worsen with spring pollen, house dust mites, and fine particulate matter. If symptoms persist, please consult an allergist or a dermatologist.

2026-06-26

Chilblains

#Chilblains, #Cold-related injury, #Frostbite, #Cold exposure, #Blood vessels, #Fingers and toes, #Body swelling, #Face swelling, #Leg swelling, #Swollen hands and feet

Chilblains are a skin inflammation that develops after prolonged exposure to low temperatures of around 5–10°C (41–50°F) or damp, cold conditions. They are a milder form of cold-related injury than frostbite, but if symptoms are severe or keep recurring, please see a medical specialist.

2026-06-26

Cold Urticaria

#cold urticaria, #hives, #cold exposure, #allergy, #cold water, #winter, #headache, #severe headache, #migraine, #back-of-head pain, #breath holding, #difficulty breathing, #shortness of breath, #choking sensation, #body swelling, #facial swelling, #leg swelling, #swelling of the hands and feet

Cold urticaria is a condition in which hives develop upon exposure to cold air, cold water, or ice. In severe cases, dangerous symptoms such as difficulty breathing can occur, so please consult a medical specialist.

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

Dysphagia (Swallowing Disorders)

#swallowing disorder, #dysphagia, #aspiration, #swallowing rehabilitation, #diet modification, #stroke, #swallowing test, #fever, #feeling hot, #high fever, #low-grade fever, #dry cough, #minor cough, #persistent cough

Dysphagia is a condition in which the ability to swallow food or drink is impaired. If 'aspiration,' in which food enters the airway, occurs, complications such as pneumonia may develop. If you suspect a decline in swallowing function, please consult a medical specialist for examination and testing.

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

Itchy Skin in Older Adults (Senile Pruritus)

#itchy skin, #aging skin, #dry skin (xerosis), #itching, #winter, #moisturizing, #eczema craquelé (cracked eczema)

Itchy skin in older adults is a common symptom in people in their 60s and older, and dry skin is the main cause. If the itching persists or becomes so severe that it disturbs sleep, please consult a dermatology specialist.

2026-06-26

Kennedy Disease (Spinal and Bulbar Muscular Atrophy)

#hereditary disease, #neurological disorder, #Kennedy disease, #muscle weakness, #genetic testing, #hand tremor, #body tremor

Kennedy disease is a genetic condition that causes progressive weakness of the nerves and muscles. Because it progresses slowly over time, ongoing management by a neurology specialist is essential to help prevent complications.

2026-06-26

Malignant Melanoma

#malignant melanoma, #melanoma, #skin cancer, #melanin, #skin, #mole, #pigment

Malignant melanoma is a malignant tumor that develops from melanocytes in the skin or mucous membranes. Melanocytes are the cells that produce skin pigment. Its prognosis tends to be the poorest among skin cancers, so early detection is very important. If you notice any unusual change in your skin, please be sure to consult a dermatologist.

2026-06-26

Metatarsalgia

#metatarsalgia, #ball of foot pain, #sole pain, #calluses, #high heels, #transverse arch, #foot

Metatarsalgia is pain that occurs in the ball of the foot, specifically the sole beneath the base of the second, third, and fourth toes. The metatarsals are the long bones in the foot that lead into the toes. Because it can have various causes, please consult a medical specialist for an accurate diagnosis.

2026-06-26

Situations Requiring an Emergency Room Visit During Chemotherapy

#anticancer therapy, #chemotherapy, #emergency, #abdominal pain, #stomachache, #bellyache, #pain inside the abdomen, #headache, #severe splitting headache, #migraine, #pain in the back of the head, #fever, #feeling feverish, #high fever, #low-grade fever, #body shaking, #shivering with cold, #chills, #shortness of breath, #difficulty breathing, #labored breathing, #feeling of suffocation, #body swelling, #facial swelling, #leg swelling, #swelling of hands and feet, #loose stool, #watery diarrhea, #frequent bowel movements, #blood on stool, #bloody stool, #bright red stool, #blood in urine, #red urine, #bloody urine, #weakness in arms and legs, #difficulty moving one side of the body, #hand tremor

Typical situations during chemotherapy that require an emergency room visit are listed below. Other emergency situations may also occur, so do not judge on your own based on the information below; please be sure to consult a medical specialist.

2026-07-13