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Eosinophilic follicular reaction induced by D emodex folliculorum mite: a different disease from eosinophilic folliculitis
Author(s) -
SabaterMarco V.,
EscutiaMuñoz B.,
BotellaEstrada R.
Publication year - 2015
Publication title -
clinical and experimental dermatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.587
H-Index - 78
eISSN - 1365-2230
pISSN - 0307-6938
DOI - 10.1111/ced.12566
Subject(s) - eosinophilic , dermatology , general hospital , medicine , demodex , folliculitis , demodex folliculorum , house dust mite , mite , pathology , general surgery , biology , allergy , immunology , rosacea , botany , allergen , acne
Summary Eosinophilic folliculitis ( EF ) is an idiopathic dermatitis included in the spectrum of eosinophilic pustular follicular reactions. D emodex folliculorum has been implicated as contributing to the pathogenesis of human immunodeficiency virus‐associated EF , but it has not been described outside this context. We present an immunocompetent 65‐year‐old white man with a 5‐year history of recurrent pruritic erythematous and oedematous lesions on his face, neck and scalp. Histopathologically, an eosinophilic microabcess with Demodex folliculorum mite within a pilosebaceous follicle was seen, and considered the causal agent. There were also accumulations of eosinophil granules on collagen bundles, and flame figure formations in the dermis. We believe that ‘eosinophilic follicular reaction’ is an appropriate term to describe this case of EF induced by D . folliculorum and thus distinguish it from the idiopathic form of EF . Moreover, this case suggests that D . folliculorum can sometimes induce an eosinophilic immune reaction.