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 can cause temporary redness, swelling, tenderness, or bruising at the injection site. You may get flu-like symptoms like fever, body aches, or nausea after Botox. Botox may cause headaches, ...

Botox (onabotulinumtoxinA) is a brand-name injectable drug for medical and aesthetic treatments. Aftercare instructions typically aim to help minimize your risk of bruising and prevent Botox from ...