Lichen Planus Pemphigoides

Lichen planus pemphigoides (LPP) is a rare cross-over syndrome between lichen planus and bullous pemphigoid. Like other forms of lichen planus, it is characterized by a skin rash (shiny, flat-topped, firm bumps that are a purple color and vary from pin point size to larger than a centimeter); however, people affected by LPP subsequently develop blisters on both the lichen planus skin lesions and on normal skin. The exact underlying cause of LPP is currently unknown, but some studies suggest that it may be associated with an allergic or immune reaction. Treatment for LPP is based on the signs and symptoms present in each person.