Medically reviewed by Maria M. LoTempio, MD Key Takeaways Botox can cause temporary redness, swelling, tenderness, or ...

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.

Botox (onabotulinumtoxinA) is a prescription injection used to treat certain medical conditions by relaxing specific muscles and glands. It comes as a powder that a healthcare professional will mix ...