Horner syndromeListen to pronunciation(...SIN-drome)A condition in which one side of the face is flushed, does not produce sweat, and has a constricted pupil and drooping eyelid. It can be caused by an injury to, or paralysis of, nerves in the neck, or by a tumor.More InformationHorner's syndrome (Genetic and Rare Diseases Information Center)Horner syndrome (MedlinePlus)Search NCI's Dictionary of Cancer TermsStarts withContainsBrowse:ABCDEFGHIJKLMNOPQRSTUVWXYZ#
