Could I Be Allergic to Dysport?

Thank you for your question. Sometimes people can have flu-like symptoms with Botox or Dysport. I would wait at least 6 months then get re-evaluated. Be certain to be under the supervision of a board certified dermatologist or plastic surgeon with expertise in injectables for the safest and most effective treatments. I hope this helps.

The most common side effects of Dysport are: nose and throat irritation, headache, injection site pain, injection site skin reaction, upper respiratory tract infection, eyelid swelling, eyelid drooping, sinus inflammation, and nausea. Since you received Dysport a first time without these symptoms, I would say the two are unrelated. 

It is very unlikely that a cough and wheeze can be due to Dysport injections, especially 3 weeks after the injections were administered.  It is most likely coincidental that both you and your friend experienced similar symptoms, but only a full physical exam with health history can tell for sure.  The Dysport is present for an average of 3 months, which is another indication that it is not related to your issue.  If Dysport did cause an allergic reaction, the symptoms may be as follow:

1) Localized rash
2) HIves
3) Shortness of breath
4) Itching around the injection sites
5) Facial swelling

I hope this helps, and I wish you the best of luck.