Botulinum toxin type A for facial muscle spasm Facial muscle spasm is a twitching of one side of the face (some people have bilateral spasms), and the more nervous and excited the spasm is, the more serious it is. As the initial symptom of facial myospasm is eyelid jumping, folklore also has the name “left eye jumping for money, right eye jumping for disaster”, so generally do not attract people’s attention, after a period of time the foci of formation, the development of facial myospasm, linked to the corner of the mouth, serious even with the neck. Facial muscle spasm can be divided into two types, one is primary facial muscle spasm and the other is facial muscle spasm produced by the sequelae of facial paralysis. Since the use of botulinum toxin type A, facial muscle spasm has achieved better results. The spasm can be relieved rapidly after type A botulinum toxin injection, the drug lasts for a long time, the local complications are brief, mild and reversible, and there is no systemic toxicity or side effects. It can be repeatedly injected with no reduction in efficacy. It can also be used to relieve the spasticity of limb spasm after spastic slant neck and hemiplegia.