TAILIEUCHUNG - Chapter 052. Approach to the Patient with a Skin Disorder (Part 2)

Table 52-2 Description of Secondary Skin Lesions Lichenification: A distinctive thickening of the skin that is characterized by accentuated skin-fold markings. Scale: Excessive accumulation of stratum corneum. Crust: Dried exudate of body fluids that may be either yellow (., serous crust) or red (., hemorrhagic crust). Erosion: Loss of epidermis without an associated loss of dermis. Ulcer: Loss of epidermis and at least a portion of the underlying dermis. Excoriation: Linear, angular erosions that may be covered by crust and are caused by scratching. Atrophy: An acquired loss of substance. In the skin, this may appear as a depression with intact epidermis (., loss of dermal. | Chapter 052. Approach to the Patient with a Skin Disorder Part 2 Table 52-2 Description of Secondary Skin Lesions Lichenification A distinctive thickening of the skin that is characterized by accentuated skin-fold markings. Scale Excessive accumulation of stratum corneum. Crust Dried exudate of body fluids that may be either yellow . serous crust or red . hemorrhagic crust . Erosion Loss of epidermis without an associated loss of dermis. Ulcer Loss of epidermis and at least a portion of the underlying dermis. Excoriation Linear angular erosions that may be covered by crust and are caused by scratching. Atrophy An acquired loss of substance. In the skin this may appear as a depression with intact epidermis . loss of dermal or subcutaneous tissue or as sites of shiny delicate wrinkled lesions . epidermal atrophy . Scar A change in the skin secondary to trauma or inflammation. Sites may be erythematous hypopigmented or hyperpigmented depending on their age or character. Sites on hair-bearing areas may be characterized by destruction of hair follicles. Table 52-3 Common Dermatologic Terms Alopecia Hair loss it may be partial or complete. Annular Ring-shaped lesions. Cyst A soft raised encapsulated lesion filled with semisolid or liquid contents. Herpetiform Grouped lesions. Lichenoid Violaceous to purple polygonal lesions that resemble those seen in lichen planus. Milia Small firm white papules filled with keratin. Morbilliform Generalized small erythematous macules and or papules that resemble lesions seen in measles. Nummular Coin-shaped lesions. Poikiloderma Skin that displays variegated pigmentation atrophy .