Is there a test to find out what is causing a burning sensation in my toe? Ie: psble nerve damage, nerve block from anesthia injections?

Nerve pain. An electromyogram and nerve conduction study can identify the cause of the burning in the foot. There are a battery of blood tests that range from B12 levels and thyroid function to blood sugar and inflammatory markers to test for neuropathy. See a neurologist for evaluation and treatment.