If you had events after the injections, I would consider them. It would be difficult to PROVE however.

Here is an article on the net, that says these injections can cause pain:
http://www.restylanesideeffects.org/...-good-and-bad/

Nerves are tricky things. Nerve damage, will cause reactions in some people and not others depending on the immune system and allergic potential that person has. RSD is a case in point.
A trauma, or surgery in the foot or knee or anywhere for some people begins a cascade of nerve reactions in the sympathetic nervous system that is extremely painful and affects the circulation of the blood in that area as well. It is thought that inflammatory cytokines formed from the nerve damage circulate in the body and then attack other nervous tissue elsewhere.
Once the pain cycle begins it is very difficult to turn off and many people with RSD have it for life.

Autoimmune nerve damage happens in MS also. In that case the myelin is attacked, which is the fatty insulation of the long nerves in the body. There are autoimmune neuropathies that are rapidly progressive, and one is called GBS..and follows viral illnesses or vaccines.

As we decode the human genome, we will find the genetic markers that are involved in these autoimmune disorders.
I just saw on the Science channel yesterday a show where a doctor found genetic markers on a man's cells that prevented him from getting AIDs back when the hemophilia treatments were all contaminated. This fellow, did not get AIDs at all, so his genetics were studied and this doctor then found that survivors of the plague in Europe (in Eyams England) also had this marker and allowed these particular people to not develop plague during the epidemic! So I think we will find more genetic things that are involved in other disorders and diseases.
It explains why one person is affected by something, and another is not.