Hihy Health
Encyclopedia

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

Breast Cancer

#Breast cancer, #Breast cancer surgery, #Breast reconstruction, #Robotic surgery, #Lymph nodes, #Breast cancer screening, #Inconclusive result, #Lymphedema, #Body swelling, #Face swelling, #Leg swelling, #Swollen hands and feet

Breast cancer is a malignant tumor that develops in breast tissue, and it is one of the more common cancers in women. Surgical and reconstruction techniques continue to advance, and outcomes are generally good when the cancer is found early. If a breast screening shows an abnormal result, or if you notice a lump or a change in the skin, please see a medical specialist.

2026-06-26

Breast Cancer Surgery and Breast Reconstruction

#breast cancer, #breast reconstruction, #robotic surgery, #breast implant, #surgery

Breast cancer is a common cancer in women. Surgical techniques have advanced considerably, making both treatment and reconstruction of the shape of the breast possible. Please do not try to judge a condition from encyclopedia information; be sure to consult a surgery specialist for an examination.

2026-06-26

Deep Vein Thrombosis (DVT)

#deep vein thrombosis, #DVT, #blood clot, #pulmonary embolism, #leg swelling, #economy class syndrome, #dry cough, #persistent cough, #cough that won't stop

Deep vein thrombosis is a condition in which a blood clot (a lump formed when blood coagulates) develops in a deep vein of the leg and blocks the vessel. Leg swelling and pain are the main symptoms, and if the clot travels to the lungs, a dangerous complication called pulmonary embolism can occur. If you suspect symptoms, please consult a medical 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

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

High-Risk Pregnancy

#high-risk pregnancy, #advanced maternal age pregnancy, #gestational hypertension, #preeclampsia, #gestational diabetes mellitus, #preterm birth, #preterm labor, #obstetrics and gynecology, #anxious feeling in the chest, #restlessness, #worrying for no reason

A high-risk pregnancy is a pregnancy with a higher chance than usual of adversely affecting the mother and the fetus. Advanced maternal age (35 or older) is one risk factor for a high-risk pregnancy. Recognizing your own risk factors and following your medical team's guidance can help lead to a good outcome.

2026-06-26

Hypertension (High Blood Pressure)

#hypertension, #blood pressure, #blood pressure medication, #sodium, #arteriosclerosis, #antihypertensive drugs, #essential hypertension, #headache, #a splitting headache, #migraine, #back-of-head pain

Hypertension is a condition in which blood pressure, the force exerted on the walls of the blood vessels when the heart pumps out blood, stays persistently high; it is classified as a systolic blood pressure of 140 mmHg or higher or a diastolic blood pressure of 90 mmHg or higher. Hypertension often causes no symptoms, so it is called the "silent killer." If left untreated, it can lead to serious complications such as stroke, heart disease, and kidney disease, so evaluation by a medical specialist and steady management are needed.

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

Melasma

#melasma, #hyperpigmentation, #melanin, #ultraviolet rays, #skin, #laser, #photoaging

Melasma is a condition in which brown or gray-brown pigmented patches appear on the skin. It most often appears on the face, especially the cheeks and forehead. If you have symptoms, please consult a dermatologist.

2026-06-26

Obesity Treatment in Adults

#obesity treatment, #diet therapy, #exercise therapy, #food diary, #calories, #protein, #appetite suppressants, #anti-obesity medication, #weight loss, #yo-yo effect, #anxious feeling in the chest, #restlessness, #worrying for no reason

Obesity is a chronic disease caused by multiple factors, including an imbalance between energy intake and expenditure, genetics, environment, and lifestyle habits. Like high blood pressure and diabetes mellitus, it needs ongoing management through education, counseling, diet, exercise, and drug therapy. Please consult a medical specialist before deciding on a treatment method.

2026-06-26

Preconception Care (Planning a Pregnancy)

#planned pregnancy, #preconception testing, #folic acid, #vaccination, #pregnancy preparation, #couples, #prenatal care

Preparing before pregnancy is important for a healthy pregnancy and birth. It is recommended to consult an OB/GYN specialist and to have the necessary tests and vaccinations starting 6 months before pregnancy. Planning a pregnancy can help protect the health of both the mother and the baby.

2026-06-26

Reflux Esophagitis

#reflux esophagitis, #gastroesophageal reflux, #heartburn, #acid regurgitation, #lower esophageal sphincter, #reflux, #stomach acid, #chest ache, #chest pain, #chest tightness, #feeling of stuffiness in the chest, #dry cough, #persistent minor cough, #cough that will not stop

Reflux esophagitis is a condition in which stomach contents flow back up into the esophagus and cause inflammation of the esophagus. Heartburn and acid regurgitation (a sour fluid rising into the throat) are typical symptoms, and the condition can be managed with lifestyle changes and drug treatment. If symptoms persist, please consult a medical specialist.

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