Hihy Health
Encyclopedia

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

Esophageal Diseases (Reflux Esophagitis and Esophageal Cancer)

#esophagus, #reflux esophagitis, #esophageal cancer, #heartburn, #reflux, #sphincter, #smoking cessation, #digestive system, #chest ache, #pain in the chest, #chest tightness, #stuffy feeling in the chest, #dry cough, #persistent cough, #cough that won't stop

The esophagus is a tube about 25 cm long that carries food from the mouth to the stomach. Reflux esophagitis and esophageal cancer are the main esophageal diseases. If you have symptoms such as heartburn, acid regurgitation (a sour taste rising into the throat), or a feeling that food is getting stuck, please consult a medical specialist.

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

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

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

Acute Upper Respiratory Infection (Common Cold)

#common cold, #upper respiratory infection, #runny nose, #nasal congestion, #pharyngitis, #tonsillitis, #fever, #cough, #antibiotics, #feverish, #having a fever, #high fever, #low-grade fever, #body shaking, #feeling cold and shivering, #chills, #dry cough, #persistent cough, #cough that won't stop, #stuffy nose, #clear runny nose, #yellow runny nose, #hand tremor, #body tremor

An acute upper respiratory infection is a condition in which a viral or bacterial infection causes inflammation in the upper airway, including the nose, tonsils, pharynx (throat), and larynx (voice box). It includes what is commonly called the "common cold." The main symptoms are runny nose, nasal congestion, sore throat, cough, and fever. Adequate fluids and rest are the basic treatment, but if you have a high fever or severe symptoms, please consult an ENT specialist.

2026-06-26

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

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

Alcoholism (Alcohol Use Disorder)

#alcoholism, #alcohol use disorder, #drinking, #alcohol abstinence, #detoxification treatment, #sobriety, #relapse prevention, #craving, #hand tremor, #body tremor, #anxious feeling, #nervousness, #worrying for no reason

Alcoholism (alcohol use disorder) is a chronic mental health condition in which drinking beyond socially accepted levels impairs physical, psychological, and social functioning. It results from a loss of the brain's control over drinking, not from a lack of willpower. Recovery may be possible with professional treatment, so please do not hesitate to ask for help.

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

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

Biliary Tract Cancer

#biliary tract cancer, #cholangiocarcinoma, #gallbladder cancer, #jaundice, #liver fluke, #bile duct stones, #painless jaundice

Biliary tract cancer is a malignant tumor that develops in the bile ducts, through which bile flows, or in the gallbladder. It mainly occurs in people in their 60s and older, and it is often found when jaundice appears after a period without symptoms. The earlier it is detected, the better the outlook for treatment, so if you have risk factors, please have regular checkups.

2026-06-26

Bladder Cancer

#bladder cancer, #hematuria, #cystoscopy, #transurethral resection, #radical cystectomy, #BCG, #cancer immunotherapy, #smoking, #renal pelvis cancer, #ureteral cancer, #stomachache, #abdominal pain, #belly ache, #gut pain, #fever, #feeling hot, #high fever, #low-grade fever, #body swelling, #facial swelling, #leg swelling, #swollen hands and feet, #frequent urination, #frequent bathroom visits, #blood in urine, #red urine, #bloody urine

Bladder cancer is a malignant tumor that develops in the inner lining of the bladder. In the early stages, treatment that preserves the bladder is often possible, but in advanced cases the bladder may need to be removed. Early detection is very important for treatment outcomes. If you have suspicious symptoms such as blood in the urine, be sure to consult a medical specialist.

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