Acute, unilateral transient blepharoptosis of unknown etiology: A review

PURPOSE:: To describe 5 patients with transient, acute, unilateral blepharoptosis of unknown etiology. METHODS:: Medical records of 5 patients, which were seen in 5 different clinics between 1998 and 2011, were reviewed. RESULTS:: The ages of the patients were 7, 7, 32, 44, and 75 years (2 women and 3 men). Four patients had partial (1.5-3.5 mm) and 1 patient had total ptosis. Levator function was normal in 2 patients, and 3 patients had only 2 to 3 mm decreased levator function on the affected side. None of the patients had limited motility or any pupil abnormalities. All patients had a history of flu-like illness preceding the development of blepharoptosis. The ptosis completely resolved in 3 to 14 days in all patients and did not recur during the follow-up period (range: 2 months-7 years). CONCLUSIONS:: Transient, acute, unilateral blepharoptosis is a very rare condition. Patients presenting with acute ptosis should be questioned about a recent history of flu-like syndrome, and if workup is negative with this history, the clinicians should suspect this rare condition.