Horner’s syndrome

Horner's syndrome


Type of disease: Rare conditions

Horner’s syndrome consists of miosis (constriction of the pupil), ptosis (drooping of the upper eyelid), and anhidrosis (absence of sweating of the face).   It is caused by injury to the sympathetic nerves of the face. In rare cases, Horner’s syndrome is congenital (present from birth) and associated with a lack of pigmentation of the iris (colored part of the eye).Source: Genetic and Rare Diseases Information Center (GARD), supported by ORDR-NCATS and NHGRI.

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