Hihy Health
Encyclopedia

Adenovirus Infection

#adenovirus, #respiratory infection, #conjunctivitis, #gastroenteritis, #childhood infection, #virus, #sore throat, #scratchy throat, #pain when swallowing, #feverish, #having a fever, #high fever, #low-grade fever, #dry cough, #persistent cough, #cough that won't stop, #loose stool, #watery diarrhea, #frequent trips to the bathroom, #pain when urinating, #burning urination, #urinating frequently, #going to the bathroom often, #blood in urine, #red urine, #bloody urine

Adenovirus is a virus that can cause infection in several parts of the body, including the respiratory tract, the eyes (conjunctiva), and the gastrointestinal tract. It mainly affects children, and infections occur throughout the year. Most cases recover with supportive (symptomatic) treatment, but people with weakened immunity can develop severe pneumonia, so caution is needed.

2026-06-26

ADHD (Attention-Deficit/Hyperactivity Disorder)

#ADHD, #inattention, #hyperactivity disorder, #concentration, #impulsivity, #children and adolescents, #dopamine

ADHD (attention-deficit/hyperactivity disorder) is a neurodevelopmental condition whose main symptoms are inattention, hyperactivity, and impulsivity. It mainly appears in childhood and adolescence, but it can continue into adulthood. If you suspect symptoms, please consult a medical specialist for an examination and evaluation.

2026-06-26

Adult Vaccination

#vaccination, #influenza, #pneumonia, #herpes zoster (shingles), #immunity

As people age, their immune defenses against infectious diseases weaken, so vaccination is important. To get the right vaccines for your own health condition, please consult an infectious disease specialist before being vaccinated.

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

Asthma

#asthma, #bronchi, #allergy, #cough, #wheezing, #shortness of breath, #inhaler, #bronchodilator, #yellow dust, #fine particulate matter, #breathlessness, #difficulty breathing, #labored breathing, #feeling of suffocation, #dry cough, #persistent cough, #cough that won't stop

Asthma is a chronic respiratory condition in which the airways (the passages through which air moves in and out of the lungs) become hypersensitive, often due to allergic reactions, and narrow, causing recurring coughing, wheezing, and shortness of breath. It is sometimes mistaken for a severe cough or cold, which can delay proper treatment. Symptoms can worsen with exposure to yellow dust, fine particulate matter, or pollen. If you have recurring coughing or shortness of breath, please consult a pulmonologist or allergist.

2026-06-26

Childhood Obesity

#childhood obesity, #adolescent obesity, #pediatric metabolic syndrome, #growth, #weight management, #eating habits, #exercise, #loose stools, #watery diarrhea, #frequent bathroom visits

Childhood obesity is a condition in which excess body fat accumulates in children and adolescents. It may continue into adulthood and increases the risk of high blood pressure, diabetes, and hyperlipidemia. Early management is important, especially at younger ages. Please talk with a medical specialist and follow a plan that combines dietary changes, exercise, and lifestyle improvements.

2026-06-26

Comparing the Common Cold, Influenza (Flu), and COVID-19

#common cold, #flu, #COVID-19, #influenza, #respiratory infection, #comparison, #mask, #handwashing, #sore throat, #scratchy throat, #pain when swallowing, #feeling feverish, #body heat, #high fever, #low-grade fever, #body shaking, #feeling cold and shivering, #cold sensation, #dry cough, #persistent minor cough, #cough that will not stop, #stuffy nose, #clear runny nose, #yellow runny nose, #hand tremor, #body tremor

The common cold, influenza (flu), and COVID-19 are all respiratory infectious diseases caused by viruses, but the causative viruses and symptoms differ. It is often difficult to tell the three apart from symptoms alone, so if you have any abnormal symptoms, please consult a medical specialist.

2026-06-26

Croup

#croup, #barking cough, #difficulty breathing, #common cold, #airway swelling, #breath holding, #difficulty breathing, #shortness of breath, #choking sensation, #dry cough, #persistent cough, #cough that won't stop, #body swelling, #facial swelling, #leg swelling, #swelling of the hands and feet

Croup is an emergency condition in which a child suddenly has difficulty breathing. Symptoms typically worsen at night and can become life-threatening, so prompt evaluation by a pediatric specialist or emergency care is needed.

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

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

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

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

Growth Hormone Therapy

#growth hormone, #short stature, #growth clinic, #pediatric endocrinology, #growth, #height, #Turner syndrome, #head pain, #splitting headache, #migraine, #pain at the back of the head, #joint pain, #knee pain, #shoulder pain, #wrist pain, #body swelling, #facial swelling, #leg swelling, #swollen hands and feet

Growth hormone is a hormone secreted by the pituitary gland that is responsible for growth and metabolic function. Growth hormone therapy may be considered when short stature is caused by growth hormone deficiency or certain genetic conditions. Treatment continues for a long period, and consultation with an experienced pediatric endocrinology specialist is needed.

2026-06-26

Hand, Foot, and Mouth Disease

#hand, #foot, #and mouth disease, #coxsackievirus, #enterovirus, #stomatitis, #children, #infants and toddlers, #handwashing, #sore throat, #scratchy throat, #pain when swallowing, #feverish, #having a fever, #high fever, #low-grade fever, #dry cough, #persistent cough, #cough that won't stop

Hand, foot, and mouth disease is a viral infection that causes blisters and rashes on the hands, feet, and inside the mouth. It mainly affects infants and young children, and most cases resolve on their own within 7 to 10 days. Personal hygiene, such as handwashing, is the most important form of prevention.

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