Botulinum toxin can distribute into a distance of thirty–forty five mm from your injected muscles towards the adjacent muscles, even if these muscles are divided by fasciae. Neck muscles are at risk of diffusion of botulinum toxin, and paralysis of the incorrect muscles leads to dysphonia, dysphagia or dystonia. https://botulinum-toxins18395.thecomputerwiki.com/5655502/a_simple_key_for_botulinum_toxins_drugs_unveiled