This common shoulder injury is often caused by repetitive overhead motions in jobs or sports. Extensive rotator cuff tears may require surgery.
Disease
Sebaceous carcinoma
Learn about diagnosis and treatments for this rare cancer that often affects the eyelid. Treatments include Mohs surgery and radiation.
Disease
Self-injury/cutting
Deliberately hurting your own body, such as by cutting or burning, is a harmful way to cope with emotional pain, intense anger and frustration.
Disease
Sickle cell anemia
Learn about the symptoms, causes and treatment of this inherited blood disorder that, in the United States, is more common among Black people.
Disease
Skin cancer
Learn about skin cancer, including basal cell carcinoma and squamous cell carcinoma. Find out about symptoms, treatments and ways to lower your risk.
Disease
Small bowel cancer
This type of cancer starts in the small intestine. Find out more about symptoms and treatments, including surgery, chemotherapy and targeted therapy.
Disease
Soft palate cancer
Learn about the symptoms of this type of cancer that forms in the back of the mouth. Treatment options might include surgery, radiation and chemotherapy.
Disease
Spinal cord injury
Learn what may happen after the spinal cord has been damaged.
Disease
Spinal cord tumor
Spinal cord tumors can cause serious problems such as pain and paralysis. Find out about diagnosis and treatment.
Disease
Spontaneous coronary artery dissection (SCAD)
A torn blood vessel in the heart can cause a heart attack. Learn about the diagnosis and treatment of this medical emergency.
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.