Clinical Characteristics of Granular Parakeratosis Caused by Benzalkonium Chloride: A Retrospective Case Series

BAK can induce GP, which presents with certain characteristic features, notably the presence of parchment-like scaling that serves as a valuable clue for differential diagnosis. Early identification and elimination of the causative irritant are key to effective treatment. Pediatric patients may be more susceptible, and the development of GP may be related to individual predisposition and cumulative BAK exposure, warranting further investigation.