Pityrosporum Infection in an Infant With Lesions Resembling Erythema Annulare Centrifugum

Abstract
• Erythematous, scaling patches over the face, torso, and extremities developed in a 2-month-old female infant. The facial lesions enlarged and became confluent, while the torso and leg lesions enlarged and assumed an annular configuration. Spores ofPityrosporum ovaleandPityrosporum orbicularewere found in large numbers in potassium hydroxide preparations from these lesions, a finding confirmed by culture. Clotrimazole ointment was applied, and the lesions resolved within one week, leaving depigmentation. The findings in this case and those of erythema gyratum atrophicans transiens neonatale resembled each other except for the demonstration ofPityrosporum spores. We assume that the disorder in our patient may represent superficial gyrate erythema (erythema annulare centrifugum) induced byPityrosporum spores. (Arch Dermatol1984;120:380-382)

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