|Gamasoidosis illustrated: from the nest to dermoscopy.|
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|PMID: 23197219 Owner: NLM Status: In-Data-Review|
|Gamasoidosis (acariasis, avian-mite dermatitis or bird-mite dermatitis) is a challenging diagnosis that is becoming more common because of the frequent use of window air conditioners in tropical countries. These devices may serve as shelters for nests of urban birds such as pigeons. Dermatologists should become familiar with this infestation to establish the correct diagnosis and treatment.|
|Carlos Gustavo Wambier; Sarah Perillo de Farias Wambier|
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|Type: Journal Article|
|Title: Anais brasileiros de dermatologia Volume: 87 ISSN: 1806-4841 ISO Abbreviation: An Bras Dermatol Publication Date: 2012 Dec|
|Created Date: 2012-11-30 Completed Date: - Revised Date: -|
Medline Journal Info:
|Nlm Unique ID: 0067662 Medline TA: An Bras Dermatol Country: Brazil|
|Languages: eng Pagination: 926-7 Citation Subset: IM|
|Division of Dermatology, School of Medicine of Ribeirão Preto, University of São Paulo, São Paulo, SP, Brazil.|
|APA/MLA Format Download EndNote Download BibTex|
Journal ID (nlm-ta): An Bras Dermatol
Journal ID (iso-abbrev): An Bras Dermatol
Journal ID (publisher-id): An. bras. dermatol.
Publisher: Sociedade Brasileira de Dermatologia
http://www.anaisdedermatologia.org.brhttp://www.scielo.br/abd©2012 by Anais Brasileiros de Dermatologia
Received Day: 27 Month: 7 Year: 2011
Accepted Day: 26 Month: 12 Year: 2011
Print publication date: Season: Nov-Dec Year: 2012
Volume: 87 Issue: 6
First Page: 926 Last Page: 927
PubMed Id: 23197219
|Gamasoidosis illustrated - from the nest to dermoscopy*|
|Carlos Gustavo Wambier1|
|Sarah Perillo de Farias Wambier2|
1M.D., Ph.D.; Dermatologist - Division of Dermatology, School of Medicine
of Ribeirão Preto - University of São Paulo (FMRP-USP) - São Paulo
2M.D.; Ophthalmologist and Oculoplastic Surgeon - PhD Student - School of
Medicine of Ribeirão Preto - University of São Paulo (FMRP-USP) -
São Paulo (SP), Brazil
|Correspondence: Mailing address: Carlos G. Wambier, MD, Division of Dermatology,
Department of Internal Medicine, School of Medicine of Ribeirao Preto - University of
Sao Paulo - Hospital of Clinics FMRPUSP, Av. Bandeirantes 3900, 4th floor, 14049-900
Ribeirao Preto, SP, E-mail: email@example.com
Gamasoidosis (acariasis, avian-mite dermatitis or bird-mite dermatitis) is a frequently unrecognized ectoparasitosis. 1-6 In contrast to scabies, mites spare interdigital spaces, axillae, and genitalia and cannot be found in human skin because they leave the host after feeding. 2 Nosocomial infestations have been reported. 4,5 Urban gamasoidosis is becoming common in tropical countries because of the frequent use of window air conditioners, which serve as shelters for bird nests.
These photos illustrate gamasoidosis in an apartment where two people lived. Patients presented with unexplained chronic pruritus in the neck and shoulders for 3 months, with occasional signs of dermographism and excoriations (Figure 1). The symptoms were relieved with antihistamines, as initial diagnosis was an urticarial reaction.
A specimen was taken to the dermatologist's office by one patient immediately after he found an unrecognizable "dot" when searching his neck after a "crawling" sensation. Dermoscopy revealed an avian mite, further identified as Ornithonyssus bursa (Figure 2). 7 The bedroom window air conditioner was found to be the source of hundreds of these mites (Figure 3). After the removal of the device, a pigeon nest was found (Figure 4). Symptoms resolved after the air conditioner was cleaned and a chain-link fence was put into place to prevent future nesting.
Gamasoidosis is a challenging diagnosis. This infestation can be caused by various mites, such as: Ornithonyssus sylviarum (northern fowl mite), Ornithonyssus bursa (tropical fowl mite), Dermanyssus gallinae (red mite), and Dermanyssus avium. Dermoscopic identification criteria to differentiate mites are still to be described. Dermoscopy may assist in ruling out the diagnosis of parasitosis delirium.
Conflict of interest: None
Financial funding: None
fn01* Work conducted at the School of Medicine of Ribeirão Preto - University of São Paulo (FMRP-USP) - Ribeirão Preto (SP), Brazil.
|1.||Kowalska M,Kupis B. Gamasoidosis (gamasidiosis)-not infrequent skin reactions, frequently unrecognizedPol Med Sci Hist BullYear: 197615-16391394826895|
|2.||Orton DI,Warren LJ,Wilkinson JD. Avian mite dermatitisClin Exp DermatolYear: 20002512913110733637|
|3.||Lucky AW,Sayers C,Argus JD,Lucky A. Avian mite bites acquired from a new source--pet gerbils: report of 2 cases and review of the literatureArch DermatolYear: 200113716717011176688|
|4.||Regan AM,Metersky ML,Craven DE. Nosocomial dermatitis and pruritus caused by pigeon mite infestationArch Intern MedYear: 1987147218521873689070|
|5.||Bellanger AP,Bories C,Foulet F,Bretagne S,Botterel F. Nosocomial dermatitis caused by Dermanyssus gallinaeInfect Control Hosp EpidemiolYear: 20082928228318205530|
|6.||Schulze KE,Cohen PR. Dove-associated gamasoidosis: a case of avian mite dermatitisJ Am Acad DermatolYear: 1994302782808288795|
|7.||Ribeiro VLS,Moojen V,Telles APD. Ornithonyssus bursa: parasito de aves causando acaríases cutâneas em humanos no Rio Grande do Sul, BrasilAn Bras DermatolYear: 1992673134|
Keywords: Ectoparasitic infestations, Mite infestations, Mites.
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