| 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) |
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| dermatitis atrophicans | A diffuse idiopathic atrophy of the skin involving the appendages. (05 Mar 2000) |
| dermatitis autophytica | Self-induced skin lesions resulting from habitual rubbing, scratching or hair-pulling, malingering, or mental disturbance. Synonym: dermatitis autophytica, factitial dermatitis, feigned eruption. (05 Mar 2000) |
| dermatitis calorica | Inflammation of the skin resulting from the action of heat. Synonym: dermatitis calorica, uritis. (05 Mar 2000) |
| dermatitis combustionis | Inflammation of the skin following a burn. (05 Mar 2000) |
| dermatitis congelationis | A cold injury that is accompanied by pallor, numbness and a loss of cold sensation. (27 Sep 1997) |
| 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 exfoliativa | Generalised exfoliation with scaling of the skin and usually with erythema (erythroderma); may be a drug reaction or associated with various benign dermatoses, lupus erythematosus, lymphomas, or of undetermined cause. Synonym: dermatitis exfoliativa, pityriasis rubra, Wilson's disease. (05 Mar 2000) |
| dermatitis exfoliativa infantum | Dermatitis exfoliativa neonatorum, a generalised pyoderma accompanied by exfoliative dermatitis, with constitutional symptoms, affecting young infants, which may result from atopic dermatitis, Leiner's disease or staphylococcal scalded skin syndrome. Synonym: impetigo neonatorum. (05 Mar 2000) |
| 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 gangrenosa infantum | A bullous or pustular eruption, of uncertain origin, followed by necrotic ulcers or extensive gangrene in children under 2 years of age; if untreated, death may result from haematogenous infection, such as liver abscess. Synonym: disseminated cutaneous gangrene, ecthyma gangrenosum, pemphigus gangrenosus, rupia escharotica. (05 Mar 2000) |
| dermatitis herpetiformis | <dermatology> A chronic disease of the skin characterised by severe itching, extensive eruption of vesicles (blisters) and papules which occur in groups. May be associated with an occult malignancy in the elderly patient. Treatment includes sulpha-based antibiotics. In some cases this condition may be associated with malabsorption. Relapses are common. (27 Sep 1997) |
| dermatitis hiemalis | A recurrent eczema appearing with the advent of cold weather. Synonym: frost itch, lumberman's itch, pruritus hiemalis, winter itch. (05 Mar 2000) |
| dermatitis, irritant | A non-allergic contact dermatitis caused by prolonged exposure to irritants and not explained by delayed hypersensitivity mechanisms. (12 Dec 1998) |
| dermatitis medicamentosa | drug eruption |