| dermatitis nodularis necrotica | A recurrent eruption of vesicles, papules, and papulonecrotic lesions on the buttocks and extensor surfaces of the extremities, accompanied by fever, sore throat, diarrhoea, and eosinophilia; probably a variant of vasculitis, it can be of varying and increasing severity and duration, and can occasionally involve the heart, kidneys, and gastrointestinal tract. Synonym: Werther's disease. (05 Mar 2000) |
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| dermatitis papillaris capillitii | A type of acneiform disorder in which secondary pyogenic infection in and around pilosebaceous structures ends in keloidal scarring. It manifests as persistent folliculitis of the back of the neck associated with occlusion of the follicular orifices. It is most often encountered in black or asian men. (12 Dec 1998) |
| dermatitis pediculoides ventricosus | Straw-bed itch, an urticarial eruption caused by the mite, Pyemotes ventricosus, which can infest straw used in mattresses. Synonym: dermatitis pediculoides ventricosus. (05 Mar 2000) |
| dermatitis repens | pustulosis palmaris et plantaris |
| dermatitis simplex | Blushing or redness of the skin caused by a toxic reaction or a neurovascular phenomenon. Synonym: dermatitis simplex. (05 Mar 2000) |
| dermatitis vegetans | A benign fungating granulomatous mass caused by chronic pyogenic infection. Synonym: pyoderma vegetans. (05 Mar 2000) |
| dermatitis venenata | An obsolete term for a cutaneous eruption due to contact with a sensitizing agent such as urushiol in poison ivy, resins, chemicals, cosmetics, etc.; the eruption is edematous, erythematous, and vesicular. (05 Mar 2000) |
| dermatitis verrucosa | An obsolete term for chromoblastomycosis. (05 Mar 2000) |
| dermatitis, allergic contact | A contact dermatitis due to allergic sensitization to various substances. These substances subsequently produce inflammatory reactions in the skin of those who have acquired hypersensitivity to them as a result of prior exposure. (12 Dec 1998) |
| dermatitis, atopic | A chronic inflammatory genetically determined disease of the skin marked by increased ability to form reagin (IgE), with increased susceptibility to allergic rhinitis and asthma, and hereditary disposition to a lowered threshold for pruritus. It is manifested by lichenification, excoriation, and crusting, mainly on the flexural surfaces of the elbow and knee. In infants it is known as infantile eczema. (12 Dec 1998) |
| dermatitis, contact | A type of acute or chronic skin reaction in which sensitivity is manifested by reactivity to materials or substances coming in contact with the skin. It may involve allergic or non-allergic mechanisms. (12 Dec 1998) |
| dermatitis, exfoliative | The widespread involvement of the skin by a scaly, erythematous dermatitis occurring either as a secondary or reactive process to an underlying cutaneous disorder (e.g., atopic dermatitis, psoriasis, etc.), or as a primary or idiopathic disease. It is often associated with the loss of hair and nails, hyperkeratosis of the palms and soles, and pruritus. (12 Dec 1998) |
| dermatitis, irritant | A non-allergic contact dermatitis caused by prolonged exposure to irritants and not explained by delayed hypersensitivity mechanisms. (12 Dec 1998) |
| dermatitis, occupational | A recurrent contact dermatitis caused by substances found in the work place. (12 Dec 1998) |
| dermatitis, perioral | A papular eruption of unknown aetiology that progresses to residual papular erythema and scaling usually confined to the area of the mouth, and almost exclusively occurring in young women. It may also be localised or extend to involve the eyelids and adjacent glabella area of the forehead (periocular dermatitis). (12 Dec 1998) |