Botox (onabotulinumtoxinA) is a brand-name injection prescribed to help prevent headaches in adults with chronic migraine. This article covers topics such as side effects, dosage, and how Botox works.

"I experienced a rare complication from my Botox injections for migraines," the 35-year-old wrote on Instagram. "It spread to muscles in my neck, causing various issues. My eyelids are droopy ...

as this may increase the risk of bruising at the injection site. Botox shots have an impact on both looks and health making ...

The most common side effects of botox are pain, bruising, swelling, and dryness at the injection site. Less common side effects include headache, flu-like symptoms, drooping eyelids, and more.