Onchodermatitis—correlation between skin disease and parasitic load in an endemic focus in Ecuador
Identifieur interne : 00E013 ( Main/Exploration ); précédent : 00E012; suivant : 00E014Onchodermatitis—correlation between skin disease and parasitic load in an endemic focus in Ecuador
Auteurs : R. J. Hay [Royaume-Uni] ; C. D. Mackenzie [Royaume-Uni] ; R. Guderian [Équateur] ; W. C. Noble [Royaume-Uni] ; J. R. Proano [Équateur] ; J. F. Williams [États-Unis]Source :
- British Journal of Dermatology [ 0007-0963 ] ; 1989-08.
Abstract
Onchocerciasis is a chronic parasitic infection in which infiltration of the skin by microfilariae has been associated with a number of different pathological changes. This survey compared the prevalence of different forms of skin disease in two villages, one of which was located within the endemic zone for onchocerciasis (Zapallo Grande), in a lowland rain forest area of western Ecuador. The commonest skin diseases in both villages were scabies, pyoderma and pityriasis versicolor. In addition changes closely correlated with the presence of microfilariae in skin snips were found in Zapallo Grande–such as atrophic gluteal changes, and acute and chronic papular dermatitis. The only other skin disease associated with onchocerciasis was widespread tinea corporis due to T. rubrum. The Amerindians in the endemic onchocerciasis area were more likely than Negroes to have generalized atrophic atrophic changes of the skin, whereas in the latter group significant numbers of individuals had no obvious skin lesions but large numbers of microfilariae were detected in skin snips. Acute papular dermatitis was common in both groups and in biopsied lesions microfilariae could usually be identified within the epidermis or close to the dermo‐epidermal junction. One patient had developed severe reactive onchodermatitis (Sowda). Swabs taken from onchocercal skin lesions showed no evidence of skin surface carriage of Staphylococcus aureus. Changes classically associated with onchocerciasis such as pretibial hypopigmentation (leopard skin) and hanging groin were notably absent in this population.
Url:
DOI: 10.1111/j.1365-2133.1989.tb01798.x
Affiliations:
- Royaume-Uni, Équateur, États-Unis
- Angleterre, Grand Londres, Michigan
- East Lansing, Londres
- Université d'État du Michigan
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Williams</name><affiliation wicri:level="4"><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Parasitology, Michigan State University, East Lansing, MI</wicri:regionArea><placeName><region type="state">Michigan</region><settlement type="city">East Lansing</settlement></placeName><orgName type="university">Université d'État du Michigan</orgName></affiliation></author></analytic><monogr></monogr><series><title level="j" type="main">British Journal of Dermatology</title><title level="j" type="alt">BRITISH JOURNAL OF DERMATOLOGY</title><idno type="ISSN">0007-0963</idno><idno type="eISSN">1365-2133</idno><imprint><biblScope unit="vol">121</biblScope><biblScope unit="issue">2</biblScope><biblScope unit="page" from="187">187</biblScope><biblScope unit="page" to="198">198</biblScope><biblScope unit="page-count">12</biblScope><publisher>Blackwell Publishing Ltd</publisher><pubPlace>Oxford, UK</pubPlace><date type="published" when="1989-08">1989-08</date></imprint><idno type="ISSN">0007-0963</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0007-0963</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Onchocerciasis is a chronic parasitic infection in which infiltration of the skin by microfilariae has been associated with a number of different pathological changes. This survey compared the prevalence of different forms of skin disease in two villages, one of which was located within the endemic zone for onchocerciasis (Zapallo Grande), in a lowland rain forest area of western Ecuador. The commonest skin diseases in both villages were scabies, pyoderma and pityriasis versicolor. In addition changes closely correlated with the presence of microfilariae in skin snips were found in Zapallo Grande–such as atrophic gluteal changes, and acute and chronic papular dermatitis. The only other skin disease associated with onchocerciasis was widespread tinea corporis due to T. rubrum. The Amerindians in the endemic onchocerciasis area were more likely than Negroes to have generalized atrophic atrophic changes of the skin, whereas in the latter group significant numbers of individuals had no obvious skin lesions but large numbers of microfilariae were detected in skin snips. Acute papular dermatitis was common in both groups and in biopsied lesions microfilariae could usually be identified within the epidermis or close to the dermo‐epidermal junction. One patient had developed severe reactive onchodermatitis (Sowda). Swabs taken from onchocercal skin lesions showed no evidence of skin surface carriage of Staphylococcus aureus. Changes classically associated with onchocerciasis such as pretibial hypopigmentation (leopard skin) and hanging groin were notably absent in this population.</div></front></TEI><affiliations><list><country><li>Royaume-Uni</li><li>Équateur</li><li>États-Unis</li></country><region><li>Angleterre</li><li>Grand Londres</li><li>Michigan</li></region><settlement><li>East Lansing</li><li>Londres</li></settlement><orgName><li>Université d'État du Michigan</li></orgName></list><tree><country name="Royaume-Uni"><noRegion><name sortKey="Hay, R J" sort="Hay, R J" uniqKey="Hay R" first="R. J." last="Hay">R. J. 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