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Stroke
A stroke happens when blood flow to part of the brain is blocked or when a blood vessel in the brain bursts…
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Sudden Arrhythmic Death Syndrome
Sudden arrhythmic death syndrome is an unexpected cardiac arrest or death caused by a dangerous problem with the heart’s electrical rhythm. It…
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Suicidal Thoughts
Suicidal thoughts, also called suicidal ideation, are thoughts about dying, ending your life, or not wanting to be alive. They may be…
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Superficial Bacterial Folliculitis
Superficial bacterial folliculitis is a bacterial infection or inflammation that affects mainly the upper part of a hair follicle. It can cause…
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Superficial Thrombophlebitis
Superficial thrombophlebitis is inflammation and clotting in a vein close to the surface of the skin. It usually affects veins in the…
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Sweating
Sweating is the release of fluid from sweat glands in the skin. It helps regulate body temperature by cooling the skin as…
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Swollen Ankles
Swollen ankles usually mean that extra fluid has collected in the tissues around the ankles and feet. This is called edema, or…
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Syphilis
Syphilis is a sexually transmitted infection caused by the bacterium Treponema pallidum. This transmitted disease can affect people of any sex or…
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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…
