Benign episodic unilateral mydriasis

A case of recurrent facial pain associated with a Pourfour du Petit syndrome: a new entity?

We report the case of a 38-year-old woman with a history of migraine who experienced an association of recurrent unilateral facial pain and Pourfour du Petit syndrome. The episodes occurred for between a few seconds and up to 3 minutes up to 6 times a day mimicking short-lasting unilateral neuralgiform headaches with cranial autonomic symptoms. No lesional cause was found and the use of topiramate led to a nearly complete disappearance of the episodes. This new entity raises the question of a novel autonomic dysfunction in short-lasting unilateral neuralgiform headaches with cranial autonomic symptoms or an unexpected presentation of migraine.

The dilated pupil: an update

The dilated pupil can present a significant challenge to the clinician. Although in most cases a complete history and physical examination is sufficient to make an accurate diagnosis, selected patients will require further investigation, including pharmacologic testing and neuroimaging. This review outlines the physiology, clinical features, and diagnostic approach to the most important causes of the dilated pupil. Particular attention is given to recent publications on this topic.