Can you develop an allergy to Botox even if you never had one before?

Sorry that happened to you. I have not seen Allergic reactions to Botox itself but it is a remote possibility. It may be the fluid used to dilute it or even related to the depth the needle was inserted. I think it would be helpful for all involved to return to the clinic where you had your treatment and have the overseeing Doctor examine you. They need to get this feedback to improve their service and you need to be re assured.Good luck!

Unfortunately, it sounds like you were treated by someone who has no expertise in injecting Botox. Your description is not of an allergic reaction, it’s of damage caused by too heavy a hand and possibly an incorrect dilution of the product. Ice and arnica may stop the swelling. Please find a professional to help you next time.  I hope this helps.

I think you already answered your question, just by asking it. The injection process felt — and sounded — different to you. Between your description and your photos, this looks like an operator error, NOT A REACTION. Take some time before your next touch-up to find  a board-certified dermatologist who is an expert with Botox, Xeomin and Dysport to treat you. You should not have any of the symptoms you described. 

Hi WR. Although allergies to neurotoxins (Botox, Dysport, Xeomin) are rare, they do happen.  When they happen, they look very similar to the reaction you show on your forehead.  Before you jump to that conclusion though, it's probably best to seek out another injector.  You may also want to check with your current injector to review the lot number of the Botox with her and report that to Allergan.  It's possible there was also a problem with the vial.  Good luck.

It is unlikely to develop an allergy to Botox after having it successfully before. I recommend following up with your injector. See an expert. Best, Dr. Emer

Very unusual.
It would be interesting to know what diluent she used as that may be the cause.
Alternatively if the area was not cleaned it may be a small infection.  It does not look like it though.
Best to see your injector again.

It is highly unusual to be allergic to Botox. What you’re describing sounds like trauma. Botox should only be administered by an expert and, in my opinion, someone who has been medically trained to give injections without causing skin and tissue trauma. Your reaction doesn’t look or sound allergic in nature. Please find a board-certified dermatologist the next time you need a Botox treatment.

Thank you for your question.  Although you can develop a reaction to anything at any time, Botox allergy or intolerance is very rare.  It is more than likely that you would be allergic to whatever was used to clean the skin.  You did not state how long after the injection the pictures were taken.  If the redness and heat persists then you should return to your injector or your doctor to be evaluation for an infection.  Good Luck, Dr. DiPasquale

Hi dear
I have not seen people who had Botox before to get allergy. There might be allergy to other products (ie: the saline that is mixed with it, or latex), but there is a chance of infection also.
Please follow uo with a Doctor ASAP
Thank you
Ramtin Massoudi, MD