Reaction in leprosy complicated by filariasis.

Five cases of reaction in leprosy with filariasis have been presented to emphasise the coexistance of the two conditions in the areas endemic to filariasis and leprosy. One may modify the clinical features of the other. Necessity of recognising filariasis as an important precipitating factor for lepra reaction in tropical countries has been highlighted for proper management of rather protracted and resistant cases.