Hi Mert. I have small fiber neuropathy dx by two biopsies in both feet and hands. I also have complex regional pain syndrome in both feet and left leg. I just asked my primary care about muscle cramps and he told me to get magnesium citrate which I haven't done yet! I can also relate to laying down and the pain in my calf and thigh and butt. Have had injections in sciatic nerve that have helped for a while.. I find neurologists useless and was told the same as you IAIYH. I have been seeing a pain management doctor for eight years now who is absolutely brilliant. I have had a spinal cord stimulator for eight years and find it helpful, more so for some areas than for others. My foot pain is the worst. A botched foot surgery by an orthopedic surgeon caused my complex regional pain syndrome (CRPS). My pain management doc is very knowledgeable about CRPS. Perhaps someone near you knows more about CRPS than most. It might be a place to look. If there is more you'd like me to share, I'd be happy to. Blessings, Barb