Long before botulinum neurotoxin was used for cosmetic purposes, it was used for the treatment of problems such as devastating spastic muscle disorders. Essentially the toxin paralyzes muscles for a couple of months. In the right hands, it can work wonders for patients with things such as spasmodic torticollis. I've met people that have received such treatments, and the positive effect on their lives has been profound. However, as with many meds, it is not without risk.