Oh yes...I had the same thing. I had 2 vials and thought I had a stroke in July. The pain at the injection site was terrible and had the worst migraine 1 hour after.I was bruised for 6 weeks. It has helped my cervical dystonia so much so I really need it. Tomorrow I am to get Botox again. I am so scared. I have had 3 docotrs tell me the Botox did not cause the hoarness, muscle weakness and swallowing problems. I am so confused. Any one know these problems?