Actually nerve entrapment can mimick CRPS, it is a necessary rule out. Temp and color changes can definitely be caused by nerve entrapment as it disrupts the neurovascular regulation. A plastic surgeon peripheral nerve surgeon who does lower extremity reconstructions is the person who specializes in this. Even with an NCS that is negative there can still be entrapment of a minor nerve that either didn't get measured or that can be expected to have a low measurement because it is tiny. Some of the smaller dorsal nerves of the foot that go through the anterior ankle don't get tested but could still be symptomatic if damaged or caught up in scar.

so frustrating on the PM! what the heck?!