Annular erythema of infancy
Medical condition
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Urticarial papules or slowly growing, raised-bordered annular or circinate erythematous plaques are found upon physical examination. Lesions are located on the face, trunk, and extremities, and the condition is asymptomatic. Individual lesions heal in a few days however, new ones keep coming up until the skin fully clears up, which happens at about a year of age. At that point, the skin looks completely normal.
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Causes
Although the exact cause of AEI is unknown, a hypersensitivity reaction to an unidentified antigen is believed to be involved.
Diagnosis
Histologic findings include perivascular lymphocyte infiltrates and either neutrophils or eosinophils; they are nonspecific.

