The look varies by type: Plaque psoriasis: Silvery scales on patches of red (light skin) or purple (dark skin) Nail psoriasis: Toe/fingernail pitting, crumbling, discoloration Inverse psoriasis: Smooth lesions in skin folds Guttate psoriasis: Teardrop-shaped bumps Pustular psoriasis: Fluid-filled lesions Von Zumbusch psoriasis: Pus-filled blisters Erythrodermic psoriasis: Discolored and scaly all over﻿﻿