A 7-year-old girl died after a Botox injection paralyzed her lungs, her family says, and they are suing pharmaceutical company Allergan for wrongful death.

Botox is the trade name for the botulinim toxin, which is produced by the botulism bacteria. Botulinim toxin blocks nerve signaling, leading to muscle paralysis, and has been called the single most toxic protein known. In small doses, it is approved for use to smooth away facial wrinkles. Although it is not approved in the United States for the treatment of muscle spasms such as those caused by cerebral palsy, U.S. law allows doctors to prescribe drugs for unapproved uses if they wish.

Kristen Spears began Botox treatment for cerebral palsy-related spasms at age six. In November 2007, Spears died from pneumonia and respiratory failure, which her family claims was caused when the botulinim toxin spread to her lungs and weakened her breathing muscles. Read more...

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