23 cases of recurrent sixth nerve palsy have ben reported in the literature, many of them following immunization or associated with viral illness.

PMID: 

J Pediatr Ophthalmol Strabismus. 2009 Jan-Feb;46(1):47-9. PMID: 19213279

Abstract Title: 

Benign recurrent abducens (sixth) nerve palsy.

Abstract: 

Benign recurrent abducens nerve palsy is rare. Twenty-three cases in children have been reported in the literature and many of these cases followed immunization or were associated with viral illness. Most of the reported patients share the following features: spontaneous recovery within 6 months, ipsilateral recurrence, and painless palsy. The authors describe a Turkish child with recurrent abducens nerve palsy with no obvious etiology.

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