Case for diagnosis. Erythematous and pruritic papules on forearms

Santana, Aline Palitot; Cardoso, Alberto Eduardo Cox; Passos, Rafaela Tenório; Ferreira, Íris Sampaio Costa

doi:10.1016/j.abd.2019.06.006

Cited by 2 publications

(2 citation statements)

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“…Gamasoidosis remains an underdiagnosed pathological entity, often overlooked despite the increasing number of reported cases, especially in urban areas [ 25 , 26 ]. Aside from the hens and pigeons that are the typical hosts for D. gallinae in egg-laying farms and the urban environment, respectively, this case demonstrates that one should consider swallows ( Hirundinidae ) as a potential host of this ectoparasite.…”

Section: Discussionmentioning

confidence: 99%

“…Skin lesions are usually flattened erythematous papules, intensely pruritic that may affect various parts of the body. Dermatoscopic criteria for the disease have not been described, but dermatoscopy may help rule out delusional parasitoses [ 26 ]. The clinical signs are self-limited and usually resolve abruptly, although symptomatic treatment with topical corticosteroids and local or oral antihistamines has been reported [ 25 ].…”

Section: Introductionmentioning

confidence: 99%

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Case of Human Infestation with Dermanyssus gallinae (Poultry Red Mite) from Swallows (Hirundinidae)

et al. 2021

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Dermanyssus gallinae (the poultry red mite, PRM) is an important ectoparasite in the laying hen industry. PRM can also infest humans, causing gamasoidosis, which is manifested as skin lesions characterized by rash and itching. Recently, there has been an increase in the reported number of human infestation cases with D. gallinae, mostly associated with the proliferation of pigeons in cities where they build their nests. The human form of the disease has not been linked to swallows (Hirundinidae) before. In this report, we describe an incident of human gamasoidosis linked to a nest of swallows built on the window ledge of an apartment in the island of Kefalonia, Greece. Mites were identified as D. gallinae using morphological keys and amplifying the Cytochrome C oxidase subunit I (COI) gene by PCR. Bayesian phylogenetic analysis and median-joining network supported the identification of three PRM haplogroups and the haplotype isolated from swallows was identical to three PRM sequences isolated from hens in Portugal. The patient was treated with topical corticosteroids, while the house was sprayed with deltamethrin. After one week, the mites disappeared and clinical symptoms subsided. The current study is the first report of human gamasoidosis from PRM found in swallows’ nest.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%