| urticaria perstans | A form of chronic urticaria in which the wheals persist unchanged for long periods; includes urticarial vasculitis. (05 Mar 2000) |
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| acrodermatitis perstans | pustulosis palmaris et plantaris |
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| Mansonella perstans | The "persistent filaria," a species widely prevalent in tropical Africa and northern South America where it infects human peritoneal and other body cavities, but is non-or mildly pathogenic; characteristic subperiodic microfilariae occur in peripheral blood. It is transmitted in Africa by the biting midges Culicoides austeni and C. Grahami. (05 Mar 2000) |
| hyperkeratosis lenticularis perstans | Small keratotic papules on the dorsa of the feet and legs, and occasionally elsewhere, with pinpoint keratotic papules of the palms and soles; onset in the fourth and fifth decades; possibly an autosomal dominant trait. Synonym: Flegel's disease. (05 Mar 2000) |
| telangiectasia macularis eruptiva perstans | A disseminated eruption of telangiectases associated with erythematous and edematous macules. (05 Mar 2000) |
| erysipelas perstans faciei | Chronic, dusky red eruption of erysipelas on the face. (05 Mar 2000) |
| erythema dyschromicum perstans | Variously sized gray or red, slightly elevated macular lesions that tend to coalesce on the trunk, extremities, and face, commonly in dark-skinned Latin Americans; of unknown cause. Synonym: ashy dermatosis. (05 Mar 2000) |
| erythema figuratum perstans | A chronic recurring erythematous eruption consisting of small and large annular lesions, with a scant marginal scale, usually of unknown cause. Synonym: erythema figuratum perstans. (05 Mar 2000) |
| erythema perstans | Probably a chronic form of erythema multiforme in which the relapses recur so persistently that the eruption is almost permanent. (05 Mar 2000) |
| acute urticaria | Urticaria accompanied by slight constitutional symptoms. Synonym: acute urticaria, urticaria acuta, urticaria febrilis. (05 Mar 2000) |
| papular urticaria | A sensitivity reaction to insect bites, especially human and pet fleas, seen mostly in young children as wheals followed by papules on exposed areas. Synonym: lichen urticatus, prurigo infantilis, urticaria papulosa. (05 Mar 2000) |
| giant urticaria | A vascular reaction involving the deep dermis or subcutaneous or submucal tissues, representing localised oedema caused by dilatation and increased permeability of the capillaries and characterised by development of giant wheals. (18 Nov 1997) |
| vibratory urticaria | A form of urticaria that occurs in response to vibratory stimuli. (05 Mar 2000) |
| cholinergic urticaria | A form of physical or non-allergic urticaria initiated by heat (e.g., hot baths, physical exercise, pyrexia, exposure to sun or to a warm room) or by excitement; the rather distinctive lesions consist of pruritic areas 1 to 2 mm in diameter surrounded by bright red macules. Synonym: heat urticaria. (05 Mar 2000) |
| chronic urticaria | A form of urticaria in which the wheals recur frequently, or persist. Synonym: urticaria chronica. (05 Mar 2000) |
| cold urticaria | Wheal formation that develops after exposure to lowered temperatures, with or without demonstrable passive-transfer antibodies. Synonym: congelation urticaria. (05 Mar 2000) |