A 78-year-old grandmother presents for evaluation of weakness in her face. She has a long-standing history of hypertension that has been under fair control. On physical examination you note that she has ptosis and miosis of the left eye and left facial anhidrosis. What is your most likely diagnosis

The correct answer is - Horner's syndrome.

Explanation:

Horner syndrome is a rare case of that is characterized as a combination of symptoms that include partial ptosis and constricted pupil know as miosis with loss of sweating in facial region called facial anhidrosis.

It is caused by the disruption of the nerve circuit from brain to eye and face of one side of body. The nerve that disrupt called sympathetic nerve supply. Ptosis is also known as a drooping eyelid.

Thus, the correct answer is - Horner syndrome.