Pemphigus is a group of rare autoimmune disorders that causes large skin blisters. The immune system normally protects against germs and other foreign invaders. Pemphigus occurs when your immune system mistakenly attacks your own skin and mucus membranes. There are three forms of the disease:
Pemphigus vulgaris—is the most common type of pemphigus. It typically involves the mouth, scalp, face, neck, armpits, or trunk. The lesions may extend deep into the layers of the skin.
Pemphigus foliaceus—produces more superficial lesions.
Paraneoplastic pemphigus—is the most serious type. It usually occurs in someone who has cancer.




