Although I did not realize at the time I basically had all the symptoms when this started but some to a lesser degree. It started the end of February out of the blue. I was woken to a twitching in my calf that would not allow me to sleep and it was the same every night. I drugged myself with Ambien most nights. All the other symptoms took a back seat. I thought I had Restless leg Syndrome and tried to deal with it myself. About 2 months later the other symptoms, including burning(which I forgot to include in the list I wrote you) increased in intensity and duration and I realized it was more serious. I then went to a Neurologist. Honestly, I wish I had gone sooner as I feel I wasted those 2 months. No, I do not know the cause yet but have not given up hope. I have gotten quite an education thanks to this wonderful group and plan to find out as much as I can when I go to my appointment with a specialist in Neurology next week.