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Syphilis
Syphilis is a serious infection passed from one person to another through sexual contact. It is caused by a bacteria…
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Sudden Infant Death Syndrome (SIDS)
Sudden infant death syndrome is the unexplained reason a baby under 1 year old dies while sleeping. There are no…
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Substance Abuse
Substance abuse can happen when products aren’t used in the right way. Prescription medicines, illegal drugs, tobacco, and alcohol can…
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Sty
A sty is a painful, red bump that forms on the edge of your eyelid. It may look like an…
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Stuttering
Stuttering is a condition that affects a person’s ability to speak smoothly. It can cause them to repeat words, parts…
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Stroke
Stroke is a medical condition that occurs when the blood flow to your brain stops. It can lead to serious…
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Strep Throat
Strep throat is an infection caused by bacteria. It is called “strep” because the bacteria that causes the infection is…
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Strabismus
Strabismus is an eye disorder. It affects the muscle control in your eyes. The eyes don’t line up properly. Instead,…
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Stomach Flu (Gastroenteritis)
Gastroenteritis is a medical term for a stomach virus. Many people call it the stomach flu. It can strike anyone…
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Stomach Cancer
Stomach cancer is the growth of cancer cells in the lining and wall of the stomach. It’s also called gastric…
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Squamous Cell Carcinoma
Squamous cell carcinoma is a common form of skin cancer caused by too much exposure to ultraviolet (UV) radiation.
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Spinal Cord Injury
Common causes of spinal cord injury include falling, sports-related events, car accidents, and diseases such as polio or spina…
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Spina Bifida
Spina bifida is a birth defect that happens when a baby’s spine and spinal cord don’t close completely during…
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Speech and Language Delay
A speech and language delay is when your child doesn’t talk as much as most other children their age.
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Sore Throat
A sore throat means that your throat hurts. It feels irritated or scratchy. You may feel mild discomfort or burning…
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Somatic Symptom and Related Disorders
Somatic symptom and related disorders is a group of conditions in which the physical pain and symptoms a person feels…
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Social Phobia
Social phobia is an irrational fear of being judged by others during social situations.
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Small Vessel Disease
Small vessel disease is a narrowing in the tiny arteries in your heart. It also is called coronary microvascular disease…
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Slipped Capital Femoral Epiphysis
Slipped capital femoral epiphysis is a hip problem. It starts if the growing end of the thigh bone slips from…
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Sleepwalking
Learn about the causes of and ways to deal with sleepwalking.
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