The common neurotoxin problems are the ones a new injector should be able to recite. The list is longer than pain and a bruise.
The list a patient should hear
PubMed Central carries a review that attributes its list to the FDA, and the review states that "the most common complications associated with neurotoxin injections include pain, swelling, bruising, eyelid ptosis, eyebrow ptosis, watery or dry eyes, and a crooked smile."
Notice how many items on that list involve the eyes, the brows or the smile rather than the skin. A consent talk that stops at bruising leaves most of it out.
Reading the product information
Product references sit alongside that list. MedlinePlus has drug information on prabotulinumtoxinA-xvfs injection, and its page on botulism explains the condition the toxin is named after.
What to do at the consent stage
Read the list aloud at consent, item by item, and record that you did. The American Society of Plastic Surgeons page on botulinum toxin is a second reference to keep open. A trainee in Parsippany, New Jersey can build that consent script once and reuse it.