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Sarcoma Cancer
Sarcoma cancer is a group of cancers that begins in connective tissues, such as muscle, fat, blood vessels, nerves, and tendons, or…
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Scabies
Scabies is a contagious skin infestation caused by microscopic Sarcoptes scabiei mites. The mites burrow into the outer layer of skin, where…
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Scarlet Fever
Scarlet fever is a contagious infection caused by group A Streptococcus bacteria. Another name for it is scarlatina. Children are the most…
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Schizophrenia
Schizophrenia is a serious, treatable mental health condition that can affect thoughts, perceptions, emotions, behavior, and daily functioning. A person may have…
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Sciatica
Sciatica is pain caused by irritation, inflammation, or compression of the sciatic nerve. This large nerve travels from the lower back through…
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Scleroderma
Scleroderma is an autoimmune connective tissue disease that causes the body to make too much collagen. This buildup can make the skin…
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Scoliosis
Scoliosis is a condition in which the spine curves sideways and may also rotate. This scoliosis spinal curvature can make the shoulders,…
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Scurvy
Scurvy is a disease caused by not getting enough vitamin C for a prolonged period. Vitamin C helps the body make collagen,…
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Sepsis
Sepsis is a life-threatening condition caused by the body's extreme response to an infection. This response can damage tissues and lead to…
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Septic Shock
Septic shock is a life-threatening condition in which a severe infection causes dangerously poor circulation and low blood pressure. The body's response…
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Sever Disease
Sever disease, also called Sever's apophysitis, causes pain and inflammation where the Achilles tendon attaches to the heel growth plate. It affects…
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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…
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Shigellosis
Shigellosis is an infection of the intestines caused by Shigella bacteria. It commonly causes diarrhea, stomach cramps, fever, and sometimes bloody stools.…
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Short Stature
Short stature means a child is significantly shorter than many other children of the same age and sex. Clinicians assess height using…
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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,…
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Sickle Cell
Sickle cell disease is an inherited blood disorder that affects hemoglobin, the protein red blood cells use to carry oxygen. Abnormal hemoglobin…
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Sickle Cell Anemia
Sickle cell anemia is an inherited form of sickle cell disease. A changed form of hemoglobin makes red blood cells become rigid…
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Sinusitis
Sinusitis is inflammation or swelling of the lining of the sinuses, the air-filled spaces around the nose, cheeks, eyes, and forehead. Swelling…
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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,…
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Skeeter Syndrome
Skeeter Syndrome is an allergic or hypersensitivity reaction to proteins in mosquito saliva. It can cause a much larger, itchier or longer-lasting…
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Skin Cancer
Skin cancer is the uncontrolled growth of abnormal cells in the skin. The main types are basal cell carcinoma, squamous cell carcinoma,…
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Skin Tags
Skin tags are soft, benign growths made of extra skin, often attached by a narrow stalk. They commonly develop in skin folds,…
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Sleep Apnea
Sleep apnea is a sleep disorder in which breathing repeatedly stops or becomes too shallow during sleep. These interruptions may last long…
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Sleep-Related Bruxism
Sleep-related bruxism is involuntary teeth grinding or jaw clenching that happens during sleep. It can affect children and adults, and a person…
