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Atypical cases of Microsporum canis infection in the adult

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Abstract

Eleven adult patients (7 males, 4 females) were found to be infected with Microsporum canis. There was involvement of the scalp in three patients: in one male and one female there were kerion-like lesions and in one male the lesions resembled seborrheic dermatitis. There were three cases of tinea barbae, males aged 28, 65 and 82 years, in the first resembling an infected single lesion of granuloma annulare, the second with a kerion-like lesion and the third with an abscess-like tumor. There were five patients with lesions in glabrous areas: one male with a lesion of the palm resembling erythema multiforme and one with an infection of the auricular lobe resembling a seborrheic dermatitis or otitis externa; of three females with tinea faciei one had a lesion simulating granuloma faciale, one simulating lymphocytic infiltration and one simulating discoid lupus erythematosus. A cat was the source of infection in three cases; in the remainder it could not be determined with certainty. It is of note that a continuous increase in infection with M. canis has been observed in Israel during the past five years.

Résumé

Onze malades adultes ont été infectés par Microsporum canis. L'invasion du cuir chevelu a été observée chez 3 malades; un homme et une femme présentaient des lésions à l'aspect de Kérion; chez le troisième (homme aussi) les lésions simulaient un pytiriasis stéatoïde. Il y avait encore 3 cas de teigne de la barbe, à l'âge de 28, 65 et 82 ans, ressemblant, pour le premier, un granulome annulaire, le second présentant le type de Kérion et le troisième un abscès. Chez le groupe de 5 malades avec des lésions sur la peau glabre, il y avait un homme avec une éruption palmaire ressemblant un érythème multiforme et un autre avec une infection du lobe de l'oreille très sembleble à une dermatite séborrhéique ou à une otite externe. Chez les 3 femmes à teigne glabreuse les lésions siégeaient le visage en simulant un granulome faciale, un lupus érythémateux discoïde et une infiltration lymphocitaire. La source d'infection a été le chat dans 3 cas, dans le reste elle ne pouvant être déterminée avec précision. Il est à noter que l'infection par M. canis en Israel s'est très rapidement dévelopée dans les dernières années.

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Alteras, I., Feuerman, E.J. Atypical cases of Microsporum canis infection in the adult. Mycopathologia 74, 181–185 (1981). https://doi.org/10.1007/BF00437161

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