research Chronological clinicopathological characterization of rapidly progressive alopecia areata resistant to multiple i.v. corticosteroid pulse therapies: An implication for improving the efficacy
In this retrospective study, researchers observed that additional rounds of intravenous corticosteroid pulse therapy led to only partial hair regrowth in some rapidly progressive alopecia areata cases, with all participants experiencing relapse, indicating limited efficacy for severe cases resistant to initial treatment.
