| chlorine 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) |
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| chlorine | <chemical> Chlorine. A greenish-yellow, diatomic gas that is a member of the halogen family of elements. It has the atomic symbol cl, atomic number 17, and atomic weight 70.906. It is a powerful irritant that can cause fatal pulmonary oedema. Chlorine is used in manufacturing, as a reagent in synthetic chemistry, for water purification, and in the production of chlorinated lime, which is used in fabric bleaching. Chemical name: Chlorine (12 Dec 1998) |
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| chlorine compounds | Inorganic compounds that contain chlorine as an integral part of the molecule. (12 Dec 1998) |
| chlorine group | The halogens. (05 Mar 2000) |
| chlorine water | A water that contains the chlorides of sodium, potassium, calcium, and magnesium in varying amounts. (05 Mar 2000) |
| acne | <dermatology> An inflammatory disease of the pilosebaceous unit, the specific type usually being indicated by a modifying term, frequently used alone to designate common acne or acne vulgaris. Origin: possibly Gr. Akm = a point or achn = chaff (15 Nov 1997) |
| acne albida | Acne caused by milia. (05 Mar 2000) |
| acne artificialis | Acne produced by external irritants, such as tar (chloracne), or drugs internally administered, such as iodides or bromides. Synonym: acne venenata. (05 Mar 2000) |
| acne bacillus | A bacteria isolated from normal skin, intestinal contents, wounds, blood, pus, and soft tissue abscesses. It is a common contaminant of clinical specimens, presumably from the skin of patients or attendants. (12 Dec 1998) |
| acne cachecticorum | Acne occurring in persons who have a debilitating constitutional disease; characterised by large, soft, purulent, ulcerative, cystic, and scarred lesions. (05 Mar 2000) |
| acne ciliaris | Follicular papules and pustules on the free edges of the eyelids. (05 Mar 2000) |
| acne conglobata | Severe cystic acne, characterised by cystic lesion, abscesses, communicating sinuses, and thickened, nodular scars; usually sparing the face. (05 Mar 2000) |
| acne cosmetica | Low-grade, non-inflammatory acne lesions from repeated application of comedogenic agents in cosmetics. (05 Mar 2000) |
| acne decalvans | A papular or pustular inflammation of the hair follicles of the scalp seen mostly in men, resulting in scarring and loss of hair in the affected area. Synonym: acne decalvans, alopecia follicularis. (05 Mar 2000) |
| acne erythematosa | acne rosacea |
| acne frontalis | A pyogenic infection involving follicles occurring chiefly on the forehead and temples; involution of the umbilicated and crusting lesions is followed by scar formation. Synonym: acne frontalis, acne necrotica. (05 Mar 2000) |