Hello! Not sure if there is any exact link or might be a coincidence to migraines and headaches but I would like to add that my husband did have frequent migraines that never went away before he was diagnosed with RSD. But also he did get diagnosed with RSD after a bad surgery that hit a wrong nerve.

I am truly sorry about your daughter! And if it is RSD I hope it gets diagnosed early so her chances of getting better would be high.