Associated Side Effects and Risks
Some people have a slight headache after treatment for several hours; very long lasting headaches have rarely been reported. A bruise and redness at the injection site is possible. The most common significant complication, though very rare, is “ptosis”- a drooping of the eyelid caused by the Botox® tracking into the eyelid muscle. It generally lasts just a few days, but more prolonged weakness is possible.
Botulinum toxin injections should not be used in pregnancy or when breastfeeding. It is also inadvisable for those with certain neurological conditions such as motor neuron disease or myasthenia gravis.
Caution is necessary for patients on the following medications:
- Aminoglycoside antibiotics toloramycn (may increase effect of Botox®)
- Chloroquine and hydroxychloroquine (may reduce effect)
- Blood thinning agents - warfarin or aspirin (may result in bruising)
