I have interstitial cystitis which is an incurable bladder disease. I am on a very strict diet and it has helped.......but my SFN symptoms are horrible. I have muscles seizing in my hip groin and butt. Huge digestive and bowel issues and numbness in feet and calves. My left leg has gotten very wek....I have muscle wasting due to my inability to walk well......balance is off. I'm only 55 and it took a year and 3 neurologists to figure out I have a SFN!!! Oh, I shake a lot sometimes....not always but mainly at night. Sleeping is becoming a luxury.