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, ...

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, while generally safe, carries a risk of neurological side effects, such as drooping eyelids, dizziness, and headache. More serious complications, including nerve damage, may occur in rare cases ...