[Efficacy of different doses of botox in treatment of chronic migraine].

Aim: To compare the efficacy of botox used in doses of 155 U and 195 U for preventive treatment of chronic migraine (CM).

Material And Methods: Thirty-nine women with CM were stratified into two groups according to the dose of botox. The duration of the study was 9 month, patient's state was assessed before treatment and after repeated injections (every 3 month).