It is a movement disorder that causes involuntary spasms in the muscles of the body. It can be generalised affecting the whole body or focal affecting specific parts eg writers cramp, blepharospasm.
Focal dystonias are involuntary movements in a single body part, which commonly includes blepharospasm (upper facial), spasmodic torticollis (cervical), and writer's cramp.
I don't think so. According to Britannica Concise Encyclopedia, "Botox blocks the release of the neurotransmitter acetylcholine, interfering with the ability of the muscle to contract". The dystonia,...