Clostridium botulinum
Botulinum toxin is a neurotoxin protein produced by the bacterium "Clostridium botulinum". Botox is a specific form of botulinum toxin manufactured by Allergan for both therapeutic and cosmetic use. Besides its cosmetic application, Botox is used in the treatment of other conditions including migraine headache and cervical dystonia (spasmodic torticollis) (a neuromuscular disorder involving the head and neck).