they didnt give me a heavy metals test. i dont know why. i have paresthesias all over the body and i dont think thats a small fiber neuropathy symptom. i've never heard of SFN being everywhere. its usually in certain locations. thats why im starting to think that all these symptoms are coming from the central nervous system. another reason why i think it could be MS is because i was suffering from muscle stiffness and muscle weakness also. i hope i find out what this is soon though.