“The plastics people suggested that some of their patients had relief from migraine after Botox treatment,” says Peter Goadsby, director of the University of California, San Francisco’s Headache Centre.
The idea began to spread and clinicians started giving Botox as an “off-label” treatment – that is, in a way not approved by regulators – to people with migraines.
Allergan, the pharmaceutical company that developed Botox, soon cottoned on and started marketing Botox as a migraine treatment. However, with no proof that the treatment worked, last year the company was fined $375 million for unlawful marketing. MORE