Stuffy nose
The presence of increased secretions and mucus in the nasal passages, most commonly arising as a result of a common cold, allergic reaction, or inflammation or infection of the paranasal sinuses (sinus infection).
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- Sturge-Weber syndrome
A congenital, but not inherited, disorder that affects the skin, the neurological system, and sometimes the eyes. The main sign of Sturge-Weber syndrome is a port wine stain birthmark. Neurological symptoms may include seizures and developmental delay. Also known as encephalotrigeminal angiomatosis. See also port wine stain.
- Stye
A red, tender bump on the eyelid that is caused by an acute infection of the oil glands of the eyelid. The medical term for a stye is hordeolum.
- Subacute
Rather recent onset or somewhat rapid change. In contrast, acute indicates very sudden onset or rapid change, and chronic indicates indefinite duration or virtually no change.
- Subacute sclerosing panencephalitis (SSPE)
A chronic brain disease of children and adolescents that occurs months to often years after an attack of measles, causing convulsions, motor abnormalities, mental retardation and, usually, death.
- Subacute spongiform encephalopathy
Gerstmann-Straussler-Scheinker syndrome.