Tremors in the upper limbs are a major concern for two-thirds of multiple sclerosis (MS) patients as they can contribute to disability and are considered by to be one of the most difficult symptoms to treat.

A United Kingdom-based independent public health agency has recently published draft guidelines recommending approval of Botox injections to treat chronic migraines.

Botox -- perhaps best known for fighting wrinkles associated with aging -- also is approved as a treatment for chronic migraines, though studies evaluating its effectiveness as a headache reliever have been mixed.