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Serotonin syndrome - Overview
University of Maryland — Serotonin syndrome is a potentialyl life-threatening drug reaction that causes the body to have too much serotonin, a chemical produced by nerve cells. Serotonin syndrome most often occurs when two drugs that affect the body's level of serotonin ...More…
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Syringomyelia - Overview
University of Maryland — Syringomyelia is damage to the spinal cord due to the formation of a fluid-filled area within the cord. The fluid build-up seen in syringomyelia may be a result of spinal cord trauma, tumors of the spinal cord, or birth defects (specifically, ...More…
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Syphilitic myelopathy - Overview
University of Maryland — Syphilitic myelopathy is a complication of untreated syphilis that involves muscle weakness and abnormal sensations. Syphilitic myelopathy is a form of neurosyphilis, which is a complication of late or tertiary syphilis infection. Syphilis is a ...More…
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Toxic synovitis - Overview
University of Maryland — Toxic synovitis is a condition affecting children that causes hip pain and limping. Toxic synovitis is a frequent cause of limping with hip pain in children. It occurs in children prior to the onset of puberty and is a transient arthritis of the ...More…
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Supranuclear ophthalmoplegia - Overview
University of Maryland — Supranuclear ophthalmoplegia is a condition that affects the movement of the eyes. This disorder occurs because the brain is sending and receiving faulty information through the nerves that control eye movement. The nerves themselves are ...More…
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SVC obstruction - Overview
University of Maryland — SVC obstruction is a narrowing or blockage of the superior vena cava -- the second largest vein in the human body. The superior vena cava moves blood from the upper half of the body to the heart. Superior vena cava (SVC) obstruction is a ...More…
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Superficial thrombophlebitis - Overview
University of Maryland — Superficial thrombophlebitis is inflammation of a vein due to a blood clot in a vein located just below the skin's surface. Superficial thrombophlebitis may occur after injury to the vein or the recent use of an intravenous (IV) line. It may also ...More…
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Suicide and suicidal behavior - Overview
University of Maryland — Suicide is the act of deliberately taking one's own life. Suicidal behavior is any deliberate action with potentially life-threatening consequences, such as taking a drug overdose or deliberately crashing a car. Suicidal behaviors can accompany ...More…
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Subdural hematoma - Overview
University of Maryland — A subdural hematoma is a collection of blood on the surface of the brain. Subdural hematomas are usually the result of a serious head injury. When one occurs in this way, it is called an "acute" subdural hematoma. Acute subdural hematomas are .. ...More…
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Subdural effusion - Overview
University of Maryland — A subdural effusion is a collection of pus beneath the outer lining of the brain. A subdural effusion is a rare complication of bacterial meningitis. Subdural effusion is more common in infants and in persons who have meningitis caused by ...More…
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Stuttering - Overview
University of Maryland — Stuttering is a speech disorder that involves involuntary hesitation, repetition ("ca-ca-ca-can"), or prolongations ("llllllike") while speaking. About 5% of children aged 2 - 5 go through a short period of stuttering, but this phase ...More…
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Strongyloidiasis - Overview
University of Maryland — People catch the infection when they come in contact with soil contaminated with the worms. The tiny worm is barely visible to the naked eye. Young roundworms can move through a person's skin and into the bloodstream to the lungs and airways. As ...More…