Classification
Psoriasis is a chronic relapsing disease of the skin, which may be classified into nonpustular and pustular types as follows:
Nonpustular psoriasis
- Psoriasis vulgaris (Chronic stationary psoriasis, Plaque-like psoriasis)
- Psoriatic erythroderma (Erythrodermic psoriasis)
Pustular psoriasis
- Generalized pustular psoriasis (Pustular psoriasis of von Zumbusch)
- Pustulosis palmaris et plantaris (Persistent palmoplantar pustulosis, Pustular psoriasis of the Barber type, Pustular psoriasis of the extremities)
- Annular pustular psoriasis
- Acrodermatitis continua
- Impetigo herpetiformis
Additional types of psoriasis include:
- Drug-induced psoriasis
- Inverse psoriasis
- Napkin psoriasis
- Seborrheic-like psoriasis
