Available online 30 September 2022

Recall dermatitis is a rare localized drug-induced acute inflammatory skin reaction mediated by skin-resident memory T (TRM) cells. We present a recall dermatitis following oral provocation with a 5-aminosalicylic acid (5-ASA) preparation occurring at previous 5-ASA skin patch sites.

Recall dermatitis

Patch test

Mesalazine

Oral provocation

Case report

inflammatory bowel disease

© 2022 Published by Elsevier Inc. on behalf of the American Academy of Allergy, Asthma & Immunology