“…The commonly used keloid injection drugs include corticosteroids (triamcinolone acetonide and betamethasone), 5-fluorouracil, verapamil and bleomycin (Kim et al., 2020; Klomparens and Simman, 2022; Sun et al., 2021). Successful outcomes after methotrexate administration have also been reported, although close monitoring is required because of the various systematic side effects of this drug (Kong et al., 2012; Muzaffar et al., 2004; Tolerton and Tonkin, 2011; Tonkin et al., 2008; Widerberg and Rosberg, 2019). Despite all the measures taken, some keloid recurrence seems to be inevitable, as seen in the three cases in our study of keloid relapse even after triamcinolone acetonide injection.…”