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肉毒杆菌毒素A是毒力较强的生物毒素之一，已知在多种神经科和眼科疾病的治疗中安全而有效。在耳鼻喉科领域内，已证实对面神经疾病治疗有效。该文对环咽肌功能障碍引起吞咽困难伴呛咳的患者，用肉毒杆菌毒素局部肌肉注射，取代传统的环咽肌侧切术及激光切除食管上口括约肌，达
Botulinum toxin A is one of the more virulent biological toxins and is known to be safe and effective in the treatment of many neurological and ophthalmic diseases. In the field of otolaryngology, treatment of facial nerve diseases has proven effective. This article on the pharyngeal muscle dysfunction caused by swallowing difficulties with cough in patients with botulinum toxin local muscle injection, instead of the traditional cricaryotomy and laser resection of the upper esophageal sphincter up to