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A stent is a small, expandable tube that can be inserted into a blood vessel and expanded using a small balloon during a procedure

Status epilepticus is a prolonged seizure that can cause brain damage and sometimes death. Head injury, drug overdose or

Strabismus is a vision problem in which both eyes do not look at the same point at the same time. It usually develops during

Stomach (gastric) juice is the term used to describe the chemicals that break down food in the stomach. These include hydrochloric

Stasis dermatitis is a condition that affects the skin on the lower legs, especially around the ankles. It can cause itching

A stye is an infection in the tiny oil glands that surround the base of each eyelash along the edge of the eyelid. A stye begins

A stomach infection, sometimes called gastroenteritis, can be caused by a viral, bacterial, or parasitic infection. It is

A subdural hematoma is an increase in pressure within the skull that happens when blood collects in the space between the skull

A subarachnoid hemorrhage is the bursting of a blood vessel in the brain. This results in sudden bleeding into the space between

Sudden heart failure causes rapid fluid buildup, or congestion, in the lungs and other parts of the body. It occurs when the heart