Pemphigus Foliaceus

In this variety the bullae, instead of being freely distended and tense, are only partly filled with fluid, and are flaccid, and often attain a considerable size. As a rule, they are accompanied with more or less debility and impairment of the vital forces. Contiguous bullae may coalesce, thus forming a large, flat, watery tumor, containing a lymphy exudation. The prognosis of pemphigus foliaceus is grave, as the majority of cases go on to a fatal termination.

In some instances pemphigus foliaceus is said to begin as a single blister, which continually enlarges until the whole surface of the body is skinned and covered with a brownish crust; it is always fatal.

The causes of pemphigus are involved in obscurity.