Intracranial aneurysm in isolated abducens nerve palsy: a ra
An isolated unilateral abducens nerve palsy in an elderly individual is most commonly caused by microvascular disorders such as in diabetes and it is characterised by a sudden onset of diplopia.

In these cases, a lesion is usually not found even by the current neuroimaging techniques. Although a brain tumour needs to be ruled out in cases of chronic abducens nerve palsy, abducens nerve palsy caused by a brain tumour is mostly accompanied by other cranial nerve palsies. In addition, reports on cases with isolated abducens nerve palsy caused by aneurismal compression are rare.

Performing neuroimaging because of the presence of headaches alone yields negative findings in most cases. Published in the journal Neuro-Ophthalmology, the authors report their findings of an elderly individual with an isolated unilateral abducens nerve palsy caused by a compression by a giant aneurysm. The symptoms developed suddenly and were accompanied by headaches.

Read about the case in detail here: