| 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) |
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| mansonella | A genus of parasitic nematodes whose organisms are distributed in central and south america. Characteristics include a smooth cuticle and an enlarged anterior end. (12 Dec 1998) |
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| Mansonella demarquayi | A filarial parasite occurring in Yucatan, Panama, Colombia, northern Argentina, Guyana, French Guiana, and the islands of St. Vincent and Dominica, causing mansonelliasis; the microfilariae are not ensheathed, and there are no nuclei in the pointed tail; the life cycle is similar to that of Wuchereria bancrofti; humans are the only known definitive host, and the intermediate hosts are biting midges, Culicoides furens and possibly C. Paraensis. Synonym: Mansonella demarquayi, Mansonella tucumana. (05 Mar 2000) |
| Mansonella ozzardi | A filarial parasite occurring in Yucatan, Panama, Colombia, northern Argentina, Guyana, French Guiana, and the islands of St. Vincent and Dominica, causing mansonelliasis; the microfilariae are not ensheathed, and there are no nuclei in the pointed tail; the life cycle is similar to that of Wuchereria bancrofti; humans are the only known definitive host, and the intermediate hosts are biting midges, Culicoides furens and possibly C. Paraensis. Synonym: Mansonella demarquayi, Mansonella tucumana. (05 Mar 2000) |
| Mansonella streptocerca | A filarial species in humans that produces nonperiodic sheathless microfilariae found in the circulating blood; may cause a lichenoid condition or oedema of the skin; commonly found in the corium of the skin of west African residents and transmitted by the biting midge, Culicoides grahami. (05 Mar 2000) |
| Mansonella tucumana | A filarial parasite occurring in Yucatan, Panama, Colombia, northern Argentina, Guyana, French Guiana, and the islands of St. Vincent and Dominica, causing mansonelliasis; the microfilariae are not ensheathed, and there are no nuclei in the pointed tail; the life cycle is similar to that of Wuchereria bancrofti; humans are the only known definitive host, and the intermediate hosts are biting midges, Culicoides furens and possibly C. Paraensis. Synonym: Mansonella demarquayi, Mansonella tucumana. (05 Mar 2000) |
| acrodermatitis perstans | pustulosis palmaris et plantaris |
| 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) |
| urticaria perstans | A form of chronic urticaria in which the wheals persist unchanged for long periods; includes urticarial vasculitis. (05 Mar 2000) |