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Extraocular muscle cysticercosis: a clinical masquerade.

PURPOSE
To highlight the different presentations of extraocular muscle cysticercosis, which can result in acquired ocular motility disorders.


METHODS
Ten cases of acquired motility disorders examined between January 1998 and January 1999 were diagnosed as extraocular muscle cysticercosis with computed tomography (CT). All patients were treated with corticosteroid therapy and albendazole. Repeat CT scans were performed in 5 patients.


RESULTS
The inferior rectus muscle was most commonly affected with double elevator palsy the most common clinical presentation. Response to treatment was satisfactory with complete resolution of the ocular motility disorder in 8 patients. Initiating therapy with corticosteroids prior to the addition of cysticidal drugs prevented severe inflammatory reactions and residual strabismus.


CONCLUSION
A high index of suspicion should be entertained for extraocular muscle cysticercosis in every case of recent acquired ocular motility disorder. Response to medical therapy is satisfactory.