I've just had Dysport on my forehead on Wednesday the 14th of April, 2010. I immediately had a bruise right by the vein in my forehead that runs from the top of my forehead to my nose. That night the severe neck pain started, and moved into my shoulders and has not abated since. I also had a bout of diarrhea late that night, but it was not very severe, so I thought nothing more of it until later when the nausea and vomiting started. I had a headache that night, but since I have migraines during my menstrual cycle, not sure if that is related to Dysport, as I was on my cycle.
The next night I woke in the middle of the night (around 4:30 to 5am) with severe nausea and projectile vomiting, which recurred last night as well. I called the RN who administered the Dysport and she says that my symptoms are not even associated with Dysport. I have seen enough comments on this site to determine that is not true. She also said at first that she would file a report, but then decided that it was not serious enough. As far as the written disclaimer prior to treatment goes, I was not given one, probably because I've always tolerated Botox well.
No mention of severe neck pain OR nausea and vomiting is mentioned in the Medication Guide, however it does have a section entitled "Spread of Toxin Effects:" which mentions "...Symptoms of botulism can happen hours to weeks after injection..." According to wikipedia, webmd, and wrongdiagnosis websites, diarrhea, nausea, and vomiting are all symptoms of Botulism.
I've tried to go on to the FDA website to post a report of some sort about my adverse reactions, but it is complicated and seems to be set up for physicians to report only. (It ask for lot numbers and manufacture dates and locations, etc.) It's a little disheartening that their reporting website is so much more difficult to use than yours (realself).
To all of you with facial deformities from Dysport, my heart goes out to you and I hope you can find a good resolution. I've not had any of those problems, thankfully, but they are alarming to read about and to see the photos. I hope that more people will post about their adverse reactions so we can get more info to the public. I will NEVER use Dysport again.
By the way, the pain of the injection is minimal, but the various pains I have suffered because of the adverse reactions to the product is much more significant, and frightening, as I don't know if it will increase or decrease in seriousness or severity.