Your patient has one eyelid drooping with a pinpoint pupil,with lack of sweating and arm weakness on that same side.What is the likely cause?

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Quizplus · Accepted Answer

The symptoms described are consistent with Horner's syndrome, which is caused by damage to the sympathetic nerve pathway. The drooping eyelid and pinpoint pupil are due to a lack of sympathetic nerve stimulation, while the lack of sweating and arm weakness are also associated with this condition. Erb's paralysis affects the brachial plexus and causes weakness in the arm and hand, but does not typically involve the eye or pupil. Bell's palsy is a unilateral facial paralysis, while Eaton-Lambert syndrome is a neuromuscular disorder that causes muscle weakness, but typically does not involve the eye or pupil.

Your Patient Has One Eyelid Drooping with a Pinpoint Pupil,with