A sprain is a stretching or tearing of ligaments — the tough bands of tissue that connect two bones together in your joints. Ice and elevation can help.
Disease
Squamous cell carcinoma of the skin
This common skin cancer usually looks like a bump or a scaly sore. Learn about symptoms and treatment options, including freezing, lasers and surgery.
Disease
Stage 4 (metastatic) colon cancer
Find out about symptoms and complications for this advanced stage of colon cancer. Learn about treatment options, including chemotherapy, surgery and targeted medicines.
Disease
Staph infections
Learn about the symptoms, causes and treatment of these potentially lethal infections.
Disease
Stevens-Johnson syndrome
Learn more about the causes of this rare disorder of the skin and mucous membranes, its early signs, and whether it's preventable.
Disease
Stomach cancer
Stomach cancer, which also is called gastric cancer, is cancer that begins in the stomach. Learn about symptoms, causes, detection and treatments.
Disease
Stomach polyps
These masses of cells that form on your stomach lining usually don't cause symptoms. Learn what causes them and when to be concerned.
Disease
Strep throat
Learn about the symptoms, causes and treatment of this throat bacterial infection in children and adults.
Disease
Stress fractures
Stress fractures are tiny cracks in bones often caused by overuse or osteoporosis. Learn how to prevent and treat them.
Disease
Stress incontinence
Movement such as coughing, laughing and running can cause urine to leak for people with this condition. Learn about treatments and self-care.
Disease
Stretch marks
Find out the symptoms of and treatment for this painless condition that causes streaks on the abdomen, breasts, hips, buttocks and thighs.
Disease
Stroke
Promptly spotting stroke symptoms leads to faster treatment and less damage to the brain.