Cranial nerve 3 palsy

Etiology

Microvascular infarction, e.g., diabetes mellitus, hypertension
Sarcoidosis
Space-occupying lesion, especially posterior inferior cerebellar artery (PICA) aneurysm
Ophthalmoplegic migraine
Brainstem infarct or vertebrobasilar insufficiency
Temporal (giant cell) arteritis
Uncal herniation

There's more to see -- the rest of this topic is available only to subscribers.