So much attention has been focused on the cosmetic uses of botulinum toxin, usually known by its trade name, Botox, that it's easy to forget about the drug's serious medical uses.

For example, the FDA recently approved Botox for preventing chronic migraines.

Sound Medicine's David Crabb, MD, sat down with Indiana University neurologist Jay Bhatt, MD, to learn how it works.

Dr. Bhatt is.... (Source: Sound Medicine)

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