Angioedema After Squaric Acid Treatment in a 6‐Year‐Old Girl

摘要

Abstract Alopecia areata (AA) involves the immune‐related destruction of hair follicles, resulting in patches of complete hair loss, most often on the scalp. The topical sensitizer squaric acid dibutylester ( SADBE ) is a popular treatment option given its low side‐effect profile, hair regrowth potential, and lack of cross‐reactivity with other chemicals. We describe a unique case of a 6‐year‐old girl who developed angioedema after SADBE treatment for AA.