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Sarcoidosis
Sarcoidosis is an inflammatory condition in which clusters of immune cells, called granulomas, form in one or more organs. The lungs and…
Sarcoma Cancer
Sarcoma cancer is a group of cancers that begins in connective tissues, such as muscle, fat, blood vessels, nerves, and tendons, or…
Scleroderma
Scleroderma is an autoimmune connective tissue disease that causes the body to make too much collagen. This buildup can make the skin…
Severe Congenital Neutropenia
Severe congenital neutropenia is a group of rare, usually genetic disorders that are present from birth. The body has persistently very low…
Shwachman-Diamond Syndrome
Shwachman-Diamond syndrome is a rare inherited disorder that usually begins in infancy or early childhood. It commonly affects the bone marrow, pancreas,…
Sickle Cell
Sickle cell disease is an inherited blood disorder that affects hemoglobin, the protein red blood cells use to carry oxygen. Abnormal hemoglobin…
Sjogren Syndrome
Sjogren syndrome is an autoimmune disease in which the immune system mistakenly attacks the body's moisture-producing glands. It commonly reduces tear production,…
Skin Cancer
Skin cancer is the uncontrolled growth of abnormal cells in the skin. The main types are basal cell carcinoma, squamous cell carcinoma,…
Sleep Apnea
Sleep apnea is a sleep disorder in which breathing repeatedly stops or becomes too shallow during sleep. These interruptions may last long…
Systemic Lupus Erythematosus
Systemic lupus erythematosus, often called lupus, is a chronic autoimmune disease in which the immune system mistakenly attacks healthy tissues. It can…
