What side effects can happen after Botox injections?

A side-effect list on a consent form is only as useful as it is complete. Ask it as a patient in Ann Arbor, Michigan would: what side effects can happen after Botox injections, and which of them does my form actually name?

Two published lists, side by side

medlineplus.gov states: "The most common side effects are pain, swelling, or bruising at the injection site." dermnetnz.org states: "These adverse effects include pain, bruising, swelling, and redness at the injection site."

Where the two lists differ

Both lists name pain, swelling and bruising at the injection site. Only the second adds redness. The first calls its list the most common side effects, while the second says the effects "include" those four, so neither claims to be the whole picture. Treat a form that is shorter than both with suspicion.

Compare your form to the lists

If your consent sheet says only "mild discomfort", or says nothing, ask which of the effects above it is meant to cover. A list that leaves out items the published sources name should be corrected on paper, not explained away across a desk.

Further reading on the same treatment

The MedlinePlus page on Botox and the botulinum toxin entry at dermnetnz.org give general descriptions. A PMC review of botulinum toxin type A products looks at the evidence on how the products compare. For the results side of the same treatment, the American Society of Plastic Surgeons has a page on botulinum toxin results.

The line to ask for in writing

Ask for this sentence: "Give me the full list of side effects in writing, and tell me whom to contact if I notice something that is not on it." A list you can reread later settles disputes that a verbal answer cannot.