Hihy Health
Encyclopedia

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

Hemolytic Uremic Syndrome (“Hamburger Disease”)

#Hemolytic uremic syndrome, #Hamburger disease, #HUS, #E. coli, #Acute kidney injury, #Thrombocytopenia, #Hemolytic anemia, #Body swelling, #Face swelling, #Leg swelling, #Swollen hands and feet, #Loose stool, #Watery diarrhea, #Frequent bowel movements, #Blood in stool, #Bloody stool, #Bright red stool

Hemolytic uremic syndrome (HUS) is a condition in which hemolytic anemia (anemia caused by the destruction of red blood cells), thrombocytopenia (a drop in platelets, the blood components that help stop bleeding), and acute kidney injury (a sudden decline in kidney function) occur together. It is also known as “hamburger disease,” a name that came from cases linked to eating undercooked hamburger patties. It occurs most often in children age 5 and younger. If these symptoms are suspected, please see a medical specialist right away.

2026-06-26

Hepatitis B

#hepatitis B, #chronic hepatitis, #antiviral drugs, #cirrhosis, #liver cancer, #HBV, #vaccination, #liver health, #lack of energy, #listlessness, #persistent tiredness, #dry cough, #persistent minor cough, #cough that will not stop

Hepatitis B is a liver inflammation caused by the hepatitis B virus. In Korea, about 30% of cirrhosis cases and 45% of liver cancer cases are associated with hepatitis B. It can be managed with proper care, including vaccination and consistent treatment, and regular checkups are important to help keep it from progressing to cirrhosis or liver cancer.

2026-06-26

Hypothermia

#hypothermia, #cold-related illness, #cold wave, #body temperature, #core temperature, #frostbite, #winter health, #hand tremor, #body tremor

Hypothermia refers to a drop in core body temperature to 35°C or below. The lower the body temperature falls, the more dangerous the condition becomes, and in severe cases it can lead to cardiac arrest. It can occur with prolonged exposure to extreme cold or cold environments, and extra caution is needed when alcohol has been consumed. If hypothermia is suspected, please call 119 immediately or go to a hospital.

2026-06-26

Intermittent Fasting

#intermittent fasting, #diet, #weight loss, #calorie restriction, #blood sugar, #diabetes mellitus, #eating disorder, #pregnancy, #eating pattern, #anxious feeling in the chest, #restlessness, #worrying for no reason

Intermittent fasting is an eating pattern in which a person does not eat for a set period and eats only during allowed times. Short-term weight loss effects have been reported, but large-scale studies of long-term effects are still lacking. It calls for caution, or is not advisable, in certain groups such as people with diabetes mellitus, so please be sure to consult a medical specialist before starting.

2026-06-26

Iron Deficiency Anemia

#anemia, #iron deficiency anemia, #iron, #hemoglobin, #iron supplement, #fatigue, #pallor, #dizziness, #women of childbearing age, #fainting, #loss of consciousness, #syncope, #low energy, #lethargy, #persistent tiredness, #indigestion, #bloating, #upset stomach, #loose stools, #watery diarrhea, #frequent bowel movements, #constipation, #difficulty passing stool, #hard stool, #double vision, #overlapping vision

Iron deficiency anemia is a condition in which a lack of iron in the body leads to a shortage of red blood cells. Common symptoms include pallor, fatigue, dizziness, and shortness of breath during exercise. It occurs especially frequently in women of childbearing age. If anemia persists for a long time, it can place strain on the heart, so identifying the cause and receiving appropriate treatment is important. If you suspect these symptoms, please consult a hematology-oncology specialist.

2026-06-26

Kawasaki Disease

#Kawasaki disease, #high fever in children, #vasculitis, #cardiac complications, #immunoglobulin

Kawasaki disease is an acute febrile vasculitis of unknown cause that occurs mainly in children. If treatment is delayed, cardiac complications can develop, so please be sure to consult a pediatrics specialist promptly for diagnosis and treatment.

2026-06-26

Key Symptoms in Pediatric Emergencies

#pediatric emergency, #pediatrics, #emergency room, #fever, #febrile seizure, #dehydration, #cough, #rash, #hives, #fall, #chest pain, #seizure, #stomachache, #my stomach hurts, #stomach upset, #abdominal discomfort, #chest ache, #pain in the chest, #chest tightness, #stuffy feeling in the chest, #feverish, #having a fever, #high fever, #low-grade fever, #breathlessness, #difficulty breathing, #labored breathing, #feeling of suffocation, #dry cough, #persistent cough, #cough that won't stop, #racing heart, #pounding heart, #rapid pulse, #loose stool, #watery diarrhea, #frequent trips to the bathroom, #blood on stool, #bloody stool, #bright red stool

When a child suddenly becomes ill, it can be difficult to decide whether to go to the emergency room right away or to wait and see a local clinic. Unlike adults, children can worsen quickly, so if your child looks or acts differently from usual, do not hesitate to seek medical care.

2026-06-26

Malaria

#malaria, #mosquito, #parasite, #fever, #chills, #overseas travel, #preventive medication, #headache, #splitting headache, #migraine, #pain at the back of the head, #feeling feverish, #body heat, #high fever, #low-grade fever, #body shaking, #feeling cold and shivering, #cold sensation, #lack of energy, #listlessness, #persistent tiredness, #hand tremor, #body tremor

Malaria is a parasitic infectious disease caused by the bite of a mosquito carrying the malaria parasite. It causes cold-like symptoms such as fever and chills, and delayed treatment can lead to serious complications. Before traveling to an area where malaria is a risk, please consult a medical specialist.

2026-06-26

Malocclusion and Orthodontic Treatment

#malocclusion, #orthodontics, #orthodontic treatment, #open bite, #deep bite, #anterior crossbite, #clear aligners, #brackets, #tooth alignment

Malocclusion is a condition in which the upper and lower teeth do not fit together correctly. When the teeth fit together well, it is easier to chew food effectively, speak clearly, and maintain a natural appearance. Leaving malocclusion untreated may reduce chewing efficiency and make tooth decay and gum disease more likely, so an accurate diagnosis and treatment at an appropriate time are important. Please consult an orthodontic specialist to decide whether and when to begin orthodontic treatment.

2026-06-26

Moyamoya Disease

#Moyamoya disease, #cerebrovascular, #cerebral infarction, #cerebral hemorrhage, #transient ischemic attack, #revascularization surgery, #pediatric stroke, #headache, #splitting headache, #migraine, #pain at the back of the head, #weakness in the arms or legs, #difficulty moving one side of the body

Moyamoya disease is a rare cerebrovascular disease in which the major blood vessels leading to the brain gradually become blocked and abnormal blood vessels form. It often presents as cerebral infarction in children and as cerebral hemorrhage in adults. Whether symptoms are present or the condition is found incidentally, please consult a neurosurgery specialist.

2026-06-26

Otitis Media in Children

#otitis media, #ear pain, #hearing loss, #common cold, #pediatric otitis media, #stuffy nose, #clear runny nose, #yellow runny nose, #blurry vision, #difficulty seeing, #hazy vision, #cannot hear, #difficulty hearing

If a child complains of ear pain or has trouble hearing after a cold, it may be otitis media. Because hearing development can be affected, please be sure to consult an ENT specialist.

2026-06-26

Parainfluenza Virus Infection

#parainfluenza, #croup, #laryngotracheobronchitis, #children, #infants, #barking cough, #respiratory infection, #dry cough, #persistent cough, #cough that won't stop

Parainfluenza virus causes acute respiratory illness in infants and young children. It is a major cause of croup (laryngotracheobronchitis), which can produce a harsh, barking cough or hoarseness. Most cases recover with supportive care, but please consult a medical specialist if symptoms are severe.

2026-06-26

RSV (Respiratory Syncytial Virus) Infection

#RSV, #respiratory syncytial virus, #bronchiolitis, #children, #infants, #wheezing, #premature infants, #feeling feverish, #body heat, #high fever, #low-grade fever, #dry cough, #persistent minor cough, #cough that will not stop, #stuffy nose, #clear runny nose, #yellow runny nose

RSV (respiratory syncytial virus) is the most common virus that causes bronchiolitis (inflammation of the small airways) and pneumonia in infants and young children. It is highly contagious, and most children are infected at least once before the age of 2. Premature infants, children with congenital heart disease, and people with weakened immunity need to take extra care.

2026-06-26

Snoring

#snoring, #sleep, #airway, #uvula, #obesity, #sleep apnea, #otolaryngology, #headache, #severe headache, #migraine, #back-of-head pain, #nasal congestion, #clear nasal discharge, #yellow nasal discharge

Snoring is a sound produced when the airway in the throat narrows during sleep. Although it may seem like a simple sleep habit, it can progress to sleep apnea. Sleep apnea is associated with various systemic conditions, including high blood pressure, heart disease, and stroke. If snoring is severe or accompanied by apnea, please consult an otolaryngology (ear, nose, and throat) specialist.

2026-06-26