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16.4 TERMS
Conditions; Lesions, signs and symptoms, neoplasms for DERMATOLOGY
| Term | Definition |
|---|---|
| cyst | Thick-walled, closed sac or pouch containing fluid or semisolid material. Lesion. |
| ulcer | Open sore on the skin or mucous membranes within the body. Lesion. |
| wheal | Smooth, slightly elevated, edematous (swollen) area that is redder or paler than the surrounding skin. Lesion. |
| acne | Chronic papular and pustular eruption of the skin with increased production of sebum. |
| eczema | Inflammatory skin disease with erythematous, papulovesicular lesions. |
| gangrene | Death of tissue associated with loss of blood supply. |
| systemic lupus erythematosus (SLE) | Chronic autoimmune inflammatory disease of collagen in the skin, of joints and of internal organs. |
| tinea | Infection of the skin caused by fungus. |
| vitiligo | Loss of pigment in areas of the skin. |
| callus | Increased growth of cells in the keratin layer of the epidermis caused by pressure or friction. |
| nevus | Pigmented lesion of the skin. |
| verruca | Epidermal growth (wart) caused by a virus. |
| Kaposi sarcoma | Malignant, vascular, neoplastic growth characterized by cutaneous nodules. |
| herpes | any of several inflammatory diseases of the skin caused by herpes viruses and characterized by a cluster of vesicles. |
| keratosis | A disease of the skin marked by overgrowth of horny tissue |
| lesion | an abnormal change in structure of an organ or part due to injury or disease |
| benign | Of a mild type or character that does not threaten health or life |
| abscess | Localized, pus containing pocket caused by a bacterial infection |