Iatrogenic botulinum Toxin Type A poisoning with persistent unilateral vocal cord paralysis: a case report and clinical implications.

With the continuous advancement of medical aesthetic technologies, botulinum toxin injection has emerged as a prevalent method for wrinkle removal and facial enhancement. However, improper administration can result in botulism incidents. This article presents a case of poisoning caused by the facial injection of Botulinum Toxin Type A. The patient was successfully treated through comprehensive measures, including the administration of Botulinum Antitoxin Type A, neurotrophic therapy, and functional rehabilitation; however, unilateral vocal cord paralysis persisted. This case underscores the potential for severe complications, such as vocal cord paralysis, arising from improper injections of Botulinum Toxin Type A. Additionally, this article reviews the existing literature concerning vocal cord paralysis.