Botox injections may provide some relief from arm tremors caused by multiple sclerosis, according to a small study published Monday. Botulinum toxin type A is sold under different brands, but it’s best known by the Allergan brand-name Botox. Botox gained fame for smoothing aging skin -- by blocking nerve signals and relaxing muscles under the skin -- but the product has a number of medical uses. In the U.S., Botox is approved to treat conditions like chronic migraine, excessive sweating and certain symptoms of MS: overactive bladder and muscles spasms in the arms.
