A patient presents to his doctor with a dilated pupil, drooping eyelid, and lack of sweating on one side of his face. The diagnosis is Horner's syndrome. Damage to what part of the nervous system caused this issue?

Question

Quizplus · Accepted Answer

Horner's syndrome is caused by damage to the sympathetic nervous system pathways. The symptoms of a dilated pupil, drooping eyelid, and lack of sweating (anhidrosis) on one side of the face are characteristic of disruption in the sympathetic fibers that innervate these areas.

A Patient Presents to His Doctor with a Dilated Pupil