How Does Botox Work?
Botox can help many disorders where excessive muscle contraction causes pain, disfigurement, or impairment of movement. Botox is a protein molecule made of amino acids linked together in two chains that are connected. When the toxin is injected into muscles, the molecule is taken up by the nerve ending at the site that the nerve meets the muscle. The toxin then binds to part of the nerve ending, inactivating the nerve by preventing the nerve from releasing a chemical (neurotransmitter) that normally travels over to the muscle causing the muscle to contract. Under normal conditions, an electrical impulse travels down the nerve to the nerve ending, causing the neurotransmitter, called acetylcholine, to be released by the nerve ending. The acetylcholine travels across a very small gap and binds to the surface of the muscle. When the binding occurs, certain changes take place in the muscle membrane which lead to the muscle’s contraction. Because Botox prevents acetylcholine release, the muscle cannot contract, and the cumulative effect is that the muscle belly relaxes.
How Does Botox Help?
Botox can help many disorders where excessive muscle contraction causes pain, disfigurement, or impairment of movement. The common denominator of all problems helped by Botox is excessive muscle contraction. Thus, conditions that involve spasticity, excessive muscle movement, or excessive muscle tone may be improved by Botox.