| cystic acne | <dermatology> A form of acne which results from the bacterial infection of cysts deep within the skin. Generally requires treatment with antibiotics and other agents (Isotretinoin). Without treatment cystic acne may result in scarring. (27 Sep 1997) |
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| steroid acne | Folliculitis similar to acne vulgaris, but resulting from topical or oral administration of steroids; comedones are rare. (05 Mar 2000) |
| iodide acne | A follicular eruption on the face, trunk, and extremities, due to injection or ingestion of iodide in a hypersensitive individual. See: iododerma. (05 Mar 2000) |
| tar acne | An occupational acne-like eruption due to prolonged contact with certain chlorinated compounds (naphthalenes and diphenyls); keratinous plugs (comedones) form in the pilosebaceous orifices, and variously sized small papules (2 to 4 mm) develop. Synonym: chlorine acne, tar acne. (05 Mar 2000) |
| tropical acne | <dermatology> A severe type of acne of the entire trunk, shoulders, upper arms, buttocks, and thighs; occurs in hot, humid climates. (05 Mar 2000) |