Botox Allergy Testing. I Want an Allergy Test but Doctors Offering Botox Said it is Unheard of. Why is This?

In your case, I think it is entirely appropriate that you get subdermal treatment in the forearm with a challenge dose of botox to make sure you are not allergic.  I recommend you find doctors who take your medical history a little more seriously.

It is extremely rare to be "allergic" to Botox, though theoretically possible.  In the rare case that a patient has some sort of reaction to Botox injections, it is more likely that they are reacting to something in the numbing cream used to numb the skin, or in the product used to mix the Botox.  If you are really nervous about it, you can have your injector give you a small "test" patch of botox in the forearm a week prior to treating the desired areas on your face or neck.

I would take this seriously and be careful. You can be allergic to anything in the preparation and it might not be the toxin itself. I have never seen or heard of this but would never say that it is impossible. YOu might try a test site on arm and even might try it with another product such as Dysport. I would be sure that you are at the doctors and stay there for a little while after in case of a problem.