Medically reviewed by Maria M. LoTempio, MD Key Takeaways Botox can cause temporary redness, swelling, tenderness, or bruising at the injection site.You may get flu-like symptoms like fever, body ...

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 ...