MORPHOLOGY OF SKIN LESIONS: Secondary Skin Lesions

MORPHOLOGY OF SKIN LESIONS: Secondary Skin Lesions Skin Lesion Secondary Skin Lesion Lesion that develops from trauma, manipulation (rubbing, scratching), complication (infection) of initial lesion, or develops naturally over time Primary Skin Lesion Initial lesion not altered by trauma, manipulation (rubbing, scratching), complication (infection), or natural regression over time. Depressed Elevated Crust/Scab (dried serum, blood, or pus overlying the lesion) Scale (dry, thin or thick flakes of skin overlying the lesion) Lichenification (thickened skin with accentuation of normal skin lines) Hypertrophic Scar (within boundary of injury) Keloid Scar (extend beyond boundary of injury) Atrophic Scar (fibrotic replacement of tissue at site of injury) Ulcer (complete loss of epidermis extending into dermis or deeper; heals with scar) Erosion (partial loss of epidermis only; heals without scar) Fissure (linear slit-like cleavage of skin) Excoriation/Scratch (linear erosion induced by scratching)