| dermatitis multiformis | 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) |
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| dermatitis nodosa | A papular eruption on the legs, related to craw-craw. (05 Mar 2000) |
| 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) |
| 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) |
| contact dermatitis | <pathology> A type of immune-mediated inflammatory skin rash that results from an allergy to a particular substance (for example jewelry dermatitis, poison ivy, neomycin ointment, etc.). (27 Sep 1997) |
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| contact-type dermatitis | Dermatitis resembling contact dermatitis or eczema, but caused by an ingested or injected allergen, usually a drug, and with a widespread or generalised distribution. (05 Mar 2000) |
| contagious pustular dermatitis | A specific disease of sheep and goats, caused by the orf virus. This virus is transmissible to man and characterised by vesiculation and ulceration of the infected site. Synonym: contagious ecthyma, contagious pustular dermatitis, scabby mouth, soremouth. Origin: O.E. Orfcwealm, murrain, fr. Orf, cattle, + cwealm, destruction (05 Mar 2000) |
| cosmetic dermatitis | <dermatology> A cutaneous eruption that results from the application of a cosmetic; due to allergic sensitization or primary irritation. (05 Mar 2000) |
| sandal strap dermatitis | Allergic contact on the dorsal surfaces of the feet, caused by synthetic rubber sandal straps or additives to natural rubber. (05 Mar 2000) |
| proliferative dermatitis | An infectious exudative dermatitis of cattle, sheep, goats, horses, and other animals (occasionally man) caused by Dermatophilus congolensis; severe (sometimes fatal) dermatophilosis is seen in cattle in the Caribbean, invariable in association with Amblyomma variegatum infestations. Synonym: proliferative dermatitis, streptothrichosis, streptotrichiasis, streptotrichosis. (05 Mar 2000) |
| Schamberg's dermatitis | Chronic purpura, especially of the legs in men, spreading to form brownish patches; associated microscopically with perivascular lymphatic infiltration, diapedesis, and haemosiderosis. Synonym: Schamberg's dermatitis. (05 Mar 2000) |
| schistosomal dermatitis | A sensitization response to repeated cutaneous invasion by cercariae of bird, mammal, or human schistosomes. Synonym: swimmer's itch, water itch. (05 Mar 2000) |
| seborrheic dermatitis | <dermatology> A form of inflammatory skin rash that results from an over activity of the sebaceous glands in the skin. Treatment often includes a mild hydrocortisone-containing cream. (27 Sep 1997) |
| solar dermatitis | A dermatitis in photosensitive persons caused by exposure to the sun's rays. (05 Mar 2000) |
| stasis dermatitis | Erythema and scaling of the lower extremities due to impaired venous circulation, seen commonly in older women or secondary to deep vein thrombosis. (05 Mar 2000) |
| nickel dermatitis | Allergic dermatitis due to contact with, or in some cases ingestion of, nickel or other metals containing nickel (e.g., stainless steel) as a diluent. (05 Mar 2000) |
| subcorneal pustular dermatitis | A pruritic chronic annular eruption of sterile vesicles and pustules beneath the stratum corneum; bears a considerable clinical resemblance to dermatitis herpetiformis. Synonym: Sneddon-Wilkinson disease, subcorneal pustular dermatitis. (05 Mar 2000) |
| nummular dermatitis | <dermatology> A form of eczema that is characterised by coin-shaped patches of inflamed skin. The cause is unknown but is related to a hypersensitivity reaction. A family history for allergies or atopic dermatitis is common in affected individuals. (13 Nov 1997) |
| deficiency dermatitis and diarrhoea, zinc | A genetic disease called acrodermatitis enteropathica is characterised by the simultaneous occurrence of skin inflammation (dermatitis) and diarrhoea. The skin on the cheeks, elbows and knees and tissue about the mouth and anus are inflammed. There is also balding of the scalp, eyebrows and lashes, delayed wound healing and recurrent bacterial and fungal infections due to immune deficiency. The key laboratory finding is an abnormally low blood zinc level reflecting impaired zinc uptake. Oral treatment with zinc is curative. (12 Dec 1998) |