Preventive Botox: What Is It and Does It Work?
In uncontrolled doses or exposures, this toxin can cause difficulty breathing or paralysisa disease calledbotulism. It works in small, controlled doses for cosmetic purposes and medical treatments, including preventing chronic migraines. Botox works by blocking pain signals and relieving muscle tension in the head and neck areas. Getty Images | Bloomberg / Contributor. In clinical trials, people who were given Botox as prescribed experienced fewer migraines. Participants were adults who had 15 or more headache days lasting four hours or more per month....