To treat chronic migraines, Botox is given approximately every 12 weeks as multiple injections around the head and neck to try to dull future headache symptoms.

为了治疗慢性偏头痛，肉毒杆菌素大约每12小时给药一次，在头和颈部周围多点注射以试图减轻将来的头痛症状。

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What is the Atlantoaxial joint space asymmetry of the main clinical symptoms and signs of head and neck;

方法：经临床大样本的调查，表明寰枢关节间隙不对称与头颈局部症状体征有相关性；

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