Plaque {Ans: Large, slightly elevated lesion with flat surface, often topped by scale}Fissure {Ans: small, deep, linear crack or tear in skin}Erosion {Ans: shallow, moist cavity in epidermis}Pustule {Ans: elevation of skin containing pus}Nodule {Ans: palpable elevated lesion; varies in size}Ulcer {Ans: cavity with loss of tissue from the epidermis and dermis, often weeping or bleeding}Comedone {Ans: mass of sebum, keratin, and debris blocking the opening of a hair follicle}Lichenification {Ans: thick, dry, rough surface (leather like)}Keloid {Ans: raised, irregular, lumpy scar due to excess collagen fiber production during healing of a wound}Vesicle {Ans: elevated, thin-walled lesion containing clear fluid (blister)}Papule {Ans: small, solid, raised lesion on surface of the skin}Crust {Ans: Dry, rough surface or dried exudate or blood}Macule {Ans: small, flat, circumscribed lesion of a different color than the normal skin}