Botox for chronic migraine prevention is given as 155 units across 31 injection sites in seven muscle areas, including your forehead, temples, behind your ears, and the back of your neck and shoulders ...

After receiving an injection, some people experience symptoms at the injection site on the skin. This reaction is a common adverse effect of vaccines, Botox injections, biologics, and chemotherapy.

After having Botox injections in the forehead, people’s brains respond in a different way when they see images of faces showing emotion. This may mean they find it harder to interpret other people’s ...