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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…
Sars-Cov-2
SARS-CoV-2 is a coronavirus that can infect people. COVID-19 is the illness that infection with this virus can cause. Like other viruses,…
Scabies
Scabies is a contagious skin infestation caused by microscopic Sarcoptes scabiei mites. The mites burrow into the outer layer of skin, where…
Scarlet Fever
Scarlet fever is a contagious infection caused by group A Streptococcus bacteria. Another name for it is scarlatina. Children are the most…
Schizophrenia
Schizophrenia is a serious, treatable mental health condition that can affect thoughts, perceptions, emotions, behavior, and daily functioning. A person may have…
Sciatica
Sciatica is pain caused by irritation, inflammation, or compression of the sciatic nerve. This large nerve travels from the lower back through…
Scleroderma
Scleroderma is an autoimmune connective tissue disease that causes the body to make too much collagen. This buildup can make the skin…
Scoliosis
Scoliosis is a condition in which the spine curves sideways and may also rotate. This scoliosis spinal curvature can make the shoulders,…
Scurvy
Scurvy is a disease caused by not getting enough vitamin C for a prolonged period. Vitamin C helps the body make collagen,…
Sensitivity To Light
Sensitivity to light, also called photophobia, is an abnormal or uncomfortable response to ordinary light. It can affect one or both eyes…
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…
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…
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…
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…
Shigellosis
Shigellosis is an infection of the intestines caused by Shigella bacteria. It commonly causes diarrhea, stomach cramps, fever, and sometimes bloody stools.…
Short Stature
Short stature means a child is significantly shorter than many other children of the same age and sex. Clinicians assess height using…
Shortness Of Breath
Shortness of breath, also called dyspnea, is an uncomfortable awareness that breathing is difficult, insufficient, or unusually rapid. It may feel like…
Shoulder Pain
Shoulder pain is discomfort in or around the shoulder. It may feel sharp, aching, burning, or stiff. Pain can come from the…
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…
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…
Sinusitis
Sinusitis is inflammation or swelling of the lining of the sinuses, the air-filled spaces around the nose, cheeks, eyes, and forehead. Swelling…
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,…
