Diabetic Third Cranial Nerve Mononeuropathy

Diabetic third cranial nerve mononeuropathy is an involvement of the oculomotor nerve related to diabetes, which alters the movement of the eye and eyelid due to damage to the blood supply of that nerve.

Common symptoms: double vision, drooping of the eyelid, and difficulty moving the eye in certain directions; characteristically, the pupil's response is usually preserved.

When should you see a doctor? The sudden onset of double vision or a drooping eyelid requires prompt evaluation to distinguish it from other causes.

Which specialist treats it? The neurologist evaluates the nerve involvement, while the endocrinologist takes part in managing the underlying diabetes; the general practitioner can guide the first consultation. It is advisable for these professionals to evaluate the condition together to define follow-up.