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Erythema Nodosum and Kerion of the Scalp

Antonio Martinez-Roig, MD; José Llorens-Terol, MD; José M. Torres, MD
Am J Dis Child. 1982;136(5):440-442. doi:10.1001/archpedi.1982.03970410058013.
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• Three children had pustular patches develop over the occipital areas of the scalp. Colonies of Trichophyton mentagrophytes grew on cultures with Sabouraud's dextrose agar with antibiotics. After a week of topical treatment with 1:10,000 potassium permanganate solution and oral treatment with griseofulvin, typical nodules of erythema nodosum appeared over the shins, ranging in diameter from 1 to 4 cm. Nodules on the legs resolved spontaneously within 12 days in the three children. Erythema nodosum occurring in patients with kerion may be interpreted as individual allergic hypersensitivity reactions as a result of the immune host response to allergenic products from the primary site of infection. This possibly may cause immune complexes that precipitate erythema nodosum.

(Am J Dis Child 1982;136:440-442)


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