Positive botulinum toxin type a response is a prognosticator for migraine surgery success. Lee M, Monson MA, Liu MT, Reed D, Guyuron B. Positive botulinum toxin type a response is a prognosticator for migraine surgery success. Plast Reconstr Surg. 2013; 131: 751-7. Articoli correlati: Botulinum toxin A and migraine surgery. Factors contributing to migraine headache surgery failure and success. Single-site botulinum toxin type A injection for elimination of migraine trigger points. Validation of the peripheral trigger point theory of migraine headaches: single-surgeon experience using botulinum toxin and surgical decompression.