Pemphigus vegetans is a localized form of pemphigus vulgaris

Pemphigus vulgaris

Pemphigus vulgaris is a chronic blistering skin disease with skin lesions that are rarely pruritic, but which are often painful.-Pathophysiology:...

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in which there is a localized vegetating papillomatous response. The eroded areas do not heal like usual but form papillomatous growth and vegetation.

Accounts for 1-2% of pemphigus cases and is a relatively benign variant of Pemphigus Vulgaris.
Two forms are recognized:

1. Neumann type: more common and characterized by early lesions similar to Pemphigus Vulgaris with large bullae and erosive areas. Healing is through formation of granulation tissue.
2. Hallopeau type: less aggressive and has pustules not bullae. These pustules heal by verrucios hyperkeratotic vegetations.