Horner syndrome

Definition

Horner's syndrome is a rare condition characterized by miosis (constriction of thepupil), ptosis (drooping of the upper eyelid), and anhidrosis (absence of sweating of the face). It iscaused by damage to the sympathetic nerves of the face. The underlying causes of Horner's syndrome vary greatly and may include a tumor, stroke, or other damage to a part of the brain called the brain stem ; injury to the carotid artery ;and trauma to the brachial plexus. 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). Treatment of Horner's syndrome depends on the underlying cause.

Also known as Horner syndrome, Horner's syndrome — per MONDO

Also identified as

• DOID 11486 per MONDO
• ICD10CM G90.2 per MONDO
• ICD9 337.09 per MONDO
• MESH D006732 per MONDO
• NCIT C28155 per MONDO
• SCTID 192915005 per MONDO
• UMLS C0019937 per MONDO

Affected Organs