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Chapter 4 Esthetics
Disorders and Diseases
| Term | Definition |
|---|---|
| Benign | Meaning "not harmful" |
| Malignant | Meaning "cancerous" |
| Carcinoma | A cancerous tissue |
| Actinic Keratosis | Pink or flesh colored precancerous lesions that feel sharp or rough, resulting from sun damage. |
| Basal Cell Carcinoma | Most common and least Severe type of skin cancer, which often appears as a light, pearly nodules; characteristics include sores, reddish patches, or a smooth growth with an elevated boarder. |
| Squamos Cell Carcinoma | More serious than basal cell carcinoma; characterized by scaly, red or pink papules or nodules; also appear as open sores or crusty areas; can grow and spread in the body. |
| Malignant Melanoma | The most serious for of skin cancer as it can spread quickly (metastasize); black or dark patches on the skin are usually uneven in texture, jagged or raised. 100% fatal if left untreated. |
| ABCDE | Asymmetry, Boarder, Color, Diameter, Evolving |
| Acne | An inflammatory skin disorder of the sebacceous glands; characterized by excess sebum production. |
| Papules | Red, inflamed lesions caused by the inflammation process. |
| Pustules | Filled with fluid from the dead white blood cells that fought the infection. |
| Cysts | Nodules made up of deep pockets of infection. |
| Pilosebaceous unit | This is the entire hair follicle including that hair shaft, sebaceous gland, and the sebaceous duct or canal to the surface. |
| Comedo | Noninflamed build up of cells, sebum, and other debris inside follicles. |
| Open comedo | A blackhead, open at the surface and exposed to air. |
| Closed Comedo | This forms when the openings of the follicles are blocked with debris and white cells, also referred to as a whitehead. |
| Sebaceous Filaments | Small, solidified impactions of oil wihtout the cell matter; filaments block the follicle and can cause acne breakouts, often found on the nose. |
| Milia | Small epidermal cysts that appear as firm white papules. Whitish, pearl-like masses of sebum and dead cells under the skin. No visible opening, often mistaken for whiteheads. |