Hihy Health
Encyclopedia

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

Epilepsy

#epilepsy, #ganjil (former Korean name), #convulsion, #seizure, #antiepileptic drugs, #neurology, #convulsive seizure

Epilepsy is a condition in which seizures occur repeatedly because of abnormal electrical signals in the brain. In Korean it used to be called 'ganjil,' but the name was changed to 'noejeonjeung' in 2012. Epilepsy is not a single disease but a group of conditions that arise from various causes. If you suspect symptoms, please be sure to consult a neurology specialist.

2026-06-26

Esophageal Cancer

#esophageal cancer, #esophagus, #Barrett's esophagus, #esophagectomy, #chemotherapy, #radiation, #alcohol abstinence, #smoking cessation, #esophageal cancer prevention

Esophageal cancer is a malignant tumor that develops in the esophagus. It can be difficult to detect in the early stages, and the earlier it is found, the better the treatment outcomes tend to be. Reducing risk factors and getting regular screening are important, and if you have any unusual symptoms, please consult a medical specialist.

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

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

Gastric Submucosal Tumor

#Gastric submucosal tumor, #GIST, #Myoma, #Lipoma, #Upper endoscopy, #Endoscopic ultrasound, #Biopsy

A gastric submucosal tumor is a growth that forms beneath the inner lining (mucosa) of the stomach. It is found in about 1 to 2 out of every 100 people who undergo an upper endoscopy, and most are benign (not harmful to the body). However, some can become malignant, so regular follow-up is needed. If one is found during an endoscopy, please follow your doctor's guidance for management.

2026-06-26

Gastritis

#Gastritis, #Acute gastritis, #Chronic gastritis, #Atrophic gastritis, #Intestinal metaplasia, #H. pylori, #Stomach cancer prevention, #Stomach pain, #My stomach hurts, #Stomachache, #Abdominal pain, #Food feels stuck, #Bloating, #Trouble digesting, #Burning stomach, #Stomach burning, #Acid regurgitation

Gastritis is inflammation of the stomach's mucosa (lining). It is often found on endoscopy even without symptoms. If left unmanaged, it can progress through atrophic gastritis and intestinal metaplasia toward stomach cancer, so regular screening and lifestyle management are important.

2026-06-26

Gastroenteritis

#gastroenteritis, #diarrhea, #vomiting, #abdominal pain, #fluid replacement, #antidiarrheal medication, #dehydration, #stomachache, #my stomach hurts, #stomach upset, #abdominal discomfort, #fever, #having a fever, #high fever, #low-grade fever, #loose stool, #watery diarrhea, #frequent trips to the bathroom, #blood in stool, #bloody stool, #bright red stool

Gastroenteritis is inflammation of the intestines that causes symptoms such as vomiting, diarrhea, and abdominal pain. Most cases resolve on their own within 2 to 3 days. The most important part of treatment is adequate fluid replacement. If symptoms are severe or last a long time, please consult a medical specialist.

2026-06-26

Gastrointestinal Stricture

#Gastrointestinal stricture, #Stricture, #Balloon dilation, #Stent, #Digestive system, #Abdominal pain, #Vomiting, #Abdominal bloating, #Stomach pain, #My stomach hurts, #Stomachache, #Belly pain, #Bloated belly, #Gas in the stomach, #Feeling full/distended

A gastrointestinal stricture is a narrowing of a passage in the digestive tract, such as the esophagus, stomach, or intestine. When the passage narrows, food cannot pass through smoothly, which can cause symptoms such as abdominal bloating, abdominal pain, and vomiting. Depending on the cause and location, it is managed with endoscopic treatment or surgery. If you have these symptoms, please be sure to see 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

Head and Neck Cancer

#Head and neck cancer, #Laryngeal cancer, #Oral cancer, #Oropharyngeal cancer, #Pharyngeal cancer, #Neck lump, #Voice change, #Difficulty swallowing, #ENT (otolaryngology), #Body swelling, #Face swelling, #Leg swelling, #Swollen hands and feet, #Weakness in arms or legs, #One-sided weakness

Head and neck cancer is a general term for malignant tumors that develop in the head and neck region, including the larynx, oral cavity, oropharynx, hypopharynx, nasal cavity, and nasopharynx. Because this area is involved in essential everyday functions such as breathing, swallowing, and speaking, treatment can be challenging. If you have a voice change lasting more than 6 weeks, a mouth sore that doesn't heal after 3 weeks, or a lump in the neck, please see an ENT (ear, nose, and throat) specialist.

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

Health Signs Seen in Your Stool

#Stool, #Bloody stool, #Black stool, #Bowel movements, #Stool color change, #Gut health, #Digestive system, #Loose stool, #Watery diarrhea, #Frequent bowel movements, #Blood in stool, #Blood in bowel movements, #Bright red stool

The color, shape, and frequency of your stool can reflect the health of your digestive system. It is important to pay attention when you notice a change from your usual pattern. If unusual symptoms persist, please see a medical specialist.

2026-06-26

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

Hematopoietic Stem Cell Transplantation (HSCT)

#hematopoietic stem cell transplantation, #bone marrow transplant, #autologous transplant, #allogeneic transplant, #graft-versus-host disease, #blood cancer, #leukemia, #lymphoma, #loose stool, #watery diarrhea, #frequent trips to the bathroom

Hematopoietic stem cell transplantation (HSCT) is a treatment that transplants hematopoietic stem cells, the cells that give rise to white blood cells, red blood cells, and platelets. It was previously known as bone marrow transplantation, but the name changed once it became possible to collect these cells from peripheral blood as well. It is mainly used to treat blood-related malignancies, and both the treatment process and follow-up care afterward are important.

2026-06-26