My foot gets some weird cramping issues with dystonia. It feels like my toes get stuck at a 90° angle down and it feels like pressure is on my top of my foot near the bottom of the leg. I also feel like my toes feel weird (maybe similar to what you describe). I get a lot of my dystonia info from a facebook site called
#nevergiveup parkinson's and dystonia
I find a lot of people there understand more than I have experience to describe.
That said, I'm just a patient, not a doc, so please check with yours.
PS - you need the # in that name to find the group.