Passing out after Botox normal? Numbness in hands?

Hi and thank you for your question and sorry to hear about the ordeal. What you experienced following the Botox treatments appears to be a vasovagal syncope and it is not directly related to Botox itself but the whole experience of injections, etc. Taking some rest with leg elevation should help. The new-onset weakness is probably not related to the syncope, but in rare cases Botox might result in systemic side effects which include muscle weakness. It is very rare, but it is advisable to do a follow up with your physician. I hope it helps and good luck! 

Some patients experience a "vaso-vagal" response to Botox injections and may get lightheaded shortly after a procedure, usually in the exam chair. Your reaction 48 hours later should be considered not from the Botox until other possible etiologies are ruled out. Consider visiting your PCP or a cardiologist for a work-up for syncope. Hope this helps, and wishing you well.Dr Joseph

I would say that it is likely you had reaction to the process of the injection and not a reaction to the Botox itself.  The symptoms you describe are consistent with what is called a vasovagal response, which can occur after any painful stimulus.  This does not necessarily mean that you would have the same reaction if you were treated again.  It would be important to mention that you had this reaction though, just so you can be observed for a bit after treatment.