The different types of psoraisis include Chronic plaque discoid psoriasis (psoriasis vulgaris), Guttate psoriasis (Raindrop psoriasis), Scalp psoriasis, flexural psoriasis, napkin psoriasis, palmar plantar pustular psoriasis, generalised pustular psoriasis, erythrodermic psoriasis, nail psoriasis and psoriatic arthritis.