Symptomatic Terms (Primary and Secondary Lesions) Flashcards
Lesion
An area of pathologically altered tissue; the two types of lesions are primary and secondary
Primary lesions
Lesions arising from previously normal skin
Macule or macula
A flat, discolored spot on the skin up to 1 cm across
Patch
A flat, discolored area on the skin larger than 1 cm
Papule
A solid mass on the skin up to 0.5 cm in diameter
Plaque
A solid mass greater than 1 cm in diameter and limited to the surface of the skin
Nodule
A solid mass greater than 1 cm that extends deeper into the epidermis
Tumor
A solid mass larger than 1-2 cm
Wheal
An area of localized skin edema (swelling)
Vesicle
Little bladder; an elevated, fluid-filled sac (blister) within or under the epidermis up to 0.5 cm in diameter
Bulla
A blister larger than 0.5 cm
Pustule
A pus-filled sac
Secondary lesions
Lesions that result in changes in primary lesions
Erosion
Gnawed away; loss of superficial epidermis, leaving an area of moisture but no bleeding
Ulcer
An open sore on the skin or mucous membrane that can bleed and scar; sometimes accompanied by infection