Hihy Health
Encyclopedia

Squamous Cell Carcinoma

#squamous cell carcinoma, #skin cancer, #ultraviolet radiation, #actinic keratosis, #skin, #keratin

Squamous cell carcinoma is the second most common type of skin cancer. Ultraviolet (UV) exposure is the main risk factor, and it is more likely to recur and metastasize than basal cell carcinoma. If you notice any unusual changes in your skin, please consult a dermatology specialist.

2026-06-26

Statin-Associated Immune-Mediated Necrotizing Myopathy

#statin, #myopathy, #IMNM, #hyperlipidemia, #muscle weakness, #immunosuppression, #autoantibody, #CK

In rare cases, people taking a statin (a medication for hyperlipidemia) can develop immune-mediated necrotizing myopathy, in which muscle weakness continues even after the medication is stopped. If weakness in both thighs or shoulders continues for a week or longer while taking a statin, please be sure to consult a medical specialist.

2026-06-26

Stomach Cancer

#Stomach cancer, #Upper endoscopy, #Indigestion, #Heartburn, #Gastritis, #Reflux esophagitis (GERD), #Functional gastrointestinal disorder, #Endoscopic resection, #Regular checkup, #Stomach pain, #My stomach hurts, #Stomachache, #Abdominal pain, #Food feels stuck, #Bloating, #Trouble digesting, #Burning stomach, #Stomach burning, #Acid regurgitation

Stomach cancer is a malignant tumor that develops in the stomach. A malignant tumor is an abnormal mass of cells that harms the body. It is common in Korea, with about 30,000 people diagnosed each year. In its early stages, it often causes no symptoms, which makes it hard to detect early. Regular upper endoscopy is very important for early detection. If you notice unusual symptoms or have concerns, please be sure to see a medical specialist.

2026-06-26

Strabismus

#strabismus, #exotropia, #esotropia, #intermittent exotropia, #amblyopia, #stereopsis (3D vision), #diplopia, #strabismus surgery, #head pain, #splitting headache, #migraine, #pain at the back of the head, #double vision, #overlapping images

Strabismus is an eye movement disorder in which the two eyes cannot look at the same point together. One eye may turn in a different direction, which can reduce the ability to see objects in three dimensions. If you suspect symptoms, please consult an eye specialist (ophthalmologist).

2026-06-26

Stroke

#stroke, #dementia, #vascular dementia, #high blood pressure, #snoring, #weakness in the arms or legs, #difficulty moving one side of the body

Stroke is a medical emergency that occurs when a blood vessel in the brain becomes blocked or ruptures. A blocked blood vessel is called a cerebral infarction, and a ruptured one is called a cerebral hemorrhage. If symptoms appear, going to the emergency room immediately is the most important way to reduce aftereffects. Stroke is also closely related to dementia. The main symptom of stroke is the loss of a specific bodily function, such as paralysis of the arms or legs. The most important factor in treatment is the golden time (the critical time window for treatment), so please be sure to consult a medical specialist for an accurate diagnosis. If abnormal symptoms appear, call 119 (Korea's emergency number) or go to the emergency room immediately.

2026-06-26

Structure and Function of the Brain

#brain, #cerebrum, #cerebellum, #brainstem, #frontal lobe, #hippocampus, #neuroplasticity, #neuron, #dry cough, #persistent minor cough, #cough that will not stop

The brain is the most important organ in the body. It processes all sensory information, regulates bodily functions, and is responsible for mental activities such as memory, thinking, and emotion. It is broadly divided into the cerebrum, cerebellum, and brainstem, and each part has a specific role.

2026-06-26

Structure and Function of the Kidneys

#kidney, #renal, #glomerulus, #renal tubule, #erythropoietin, #renin, #water balance regulation, #salt balance regulation, #body swelling, #facial swelling, #leg swelling, #swelling of the hands and feet

The kidneys are vital organs that filter the blood and remove waste products through urine. Beyond waste removal, the kidneys perform a range of functions, including regulating water and salt balance, controlling blood pressure, and stimulating red blood cell production. Understanding the structure and function of the kidneys can help you protect your kidney health. If a problem with kidney function is suspected, please be sure to consult a medical specialist.

2026-06-26

Structure and Function of the Lungs

#lung, #alveoli, #bronchus, #respiration, #oxygen, #carbon dioxide, #thoracic cavity, #external respiration, #lung function

The lungs are organs that play a central role in breathing. They are responsible for external respiration — delivering oxygen from the air into the blood and expelling carbon dioxide produced by the body. There is one lung on each side of the heart, and each lung is made up of roughly 500 million alveoli (tiny air sacs).

2026-06-26

Sunburn

#sunburn, #ultraviolet rays, #UV exposure, #burn, #skin, #summer, #cooling, #sun protection, #fever, #having a fever, #high fever, #low-grade fever, #body shaking, #chills, #feeling cold and shivering, #hand tremor, #body tremor

Sunburn is an inflammatory skin reaction caused by excessive exposure to ultraviolet (UV) rays during outdoor activity. It can go beyond simple discomfort and lead to systemic symptoms. If symptoms are severe or persistent, please be sure to consult a dermatologist.

2026-06-26

Surfer's Myelopathy

#surfer's myelopathy, #surfing, #spinal cord, #paralysis, #hyperextension, #low back pain, #urinary dysfunction, #back pain, #lower back pain, #back strain, #numbness in the hands and feet, #arm numbness, #tingling in the legs, #weakness in the arms or legs, #one-sided weakness

Surfer's myelopathy is a rare condition in which reduced blood flow to the spinal cord during activities that involve excessive backward bending of the spine — such as surfing, yoga, or Pilates — leads to neurological symptoms. If leg paralysis or loss of bladder or bowel control develops after low back pain, go to the emergency room immediately.

2026-06-26

Syncope in Children and Adolescents

#syncope, #fainting, #adolescents, #hypotension, #orthostatic hypotension, #reflex syncope, #children, #arrhythmia, #feverish, #having a fever, #high fever, #low-grade fever, #fever, #collapsing, #loss of consciousness, #passing out, #racing heart, #pounding heart, #rapid pulse, #loose stool, #watery diarrhea, #frequent trips to the bathroom

Syncope is a temporary loss of consciousness that occurs when blood pressure drops suddenly and blood flow to the brain is briefly reduced. It is commonly called fainting. It occurs more often in adolescents and older adults, and caution is needed because injuries can occur when a person falls. Because there are many possible causes, if syncope occurs, please consult a medical specialist to identify the exact cause.

2026-06-26

Syphilis

#syphilis, #sexually transmitted infection, #Treponema, #ulcer, #rash, #penicillin, #sexually transmitted disease, #lack of energy, #listlessness, #persistent tiredness, #body swelling, #facial swelling, #leg swelling, #swollen hands and feet

Syphilis is an infectious disease caused by the bacterium Treponema pallidum, which is spread mainly through sexual contact. It can be treated when detected early, but if left untreated, serious complications can develop. If you have suspected symptoms or risk factors, please consult a medical specialist.

2026-06-26

Tachycardia

#tachycardia, #arrhythmia, #palpitations, #catheter ablation, #implantable cardioverter-defibrillator, #dizziness, #spinning sensation, #unsteadiness, #vision going dark, #collapse, #loss of consciousness, #fainting, #rapid heartbeat, #pounding heart, #fast pulse, #weakness in arms and legs, #difficulty moving one side of the body

Tachycardia is a condition in which the heart beats abnormally fast, and it may cause dizziness or fainting. If symptoms occur, please consult a cardiology specialist so that the condition can be managed safely.

2026-06-26

Temporomandibular Joint Disorders in Children

#temporomandibular joint, #jaw joint, #bruxism, #jaw pain, #splint, #occlusal stabilization appliance, #pediatric dentistry, #TMJ disc displacement

The temporomandibular joint (TMJ) is the jaw joint located in front of the ear. When this joint has a problem, symptoms such as pain around the jaw or noises when opening the mouth may occur. These disorders can also occur in children and adolescents. If you have symptoms, please consult a dental specialist.

2026-06-26

Tension-Type Headache

#tension-type headache, #head pain, #forward head posture, #posture correction, #trigger point injection, #rehabilitation therapy, #stress, #headache, #splitting headache, #migraine, #pain at the back of the head

Tension-type headache is a very common headache that is caused not by the nerve tissue of the brain itself but by sustained contraction of the muscles that surround the skull and the back of the neck. Stress, poor posture, and lack of sleep are the main causes. If headaches persist or worsen, please consult a medical specialist.

2026-06-26