Hypersensitivity to mosquito with blisters.

Abstract

When facing acquired bullous lesions in a child you can think of viral or bacterial infectious causes such as it happened in the present case; when the lesions last for a long time you must also exclude an autoimmune bullous disorder. In the actual case the correct diagnosis arrived late due to the presence of frankly bullous lesions, which are rare in the hypersensitivity to mosquito, and the localization of lesions even in normally covered sites; the child however lived in the country and often played out-doors naked.
Physicians should consider hypersensitivity to mosquito when facing bullous lesions only in exposed locations, mostly on the legs, when the bullous lesions occur on pre-existing wheal lesions, in case of short duration of the bullous lesions that recur for a few weeks, especially at the beginning of the hot season, and coexistence of itchy, papular and vesicular lesions on the typical exposed areas of hypersensitivity to mosquito.