Annular erythema of infancy (AEI) is characterized by self-limited eruptions of erythematous, annular to polycyclic patches and plaques, the etiology of which is thought to involve a hypersensitivity reaction to an unknown antigen. We present a case of AEI mistaken for systemic mastocytosis due to elevated serum tryptase. We were unable to find prior reports of an association between AEI and elevated tryptase in the literature.

中文翻译：

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婴儿环状红斑伴类胰蛋白酶升高一例

婴儿环状红斑 (AEI) 的特征是出现自限性红斑、环状至多环状斑块和斑块，其病因被认为涉及对未知抗原的超敏反应。我们提出一例因血清类胰蛋白酶升高而将 AEI 误认为全身性肥大细胞增多症的病例。我们无法在文献中找到 AEI 与类胰蛋白酶升高之间关联的先前报道。