I have been suffering from these exact symptoms for going on 3 years now. Mine, strangly enough, seems to go away for the Spring and Summer, but returns late summer/early Fall and then on into winter. It does seem aggravated by high levels of stress, but is also there regardless, too. It begins as an itch, and then is persistent until is is a sharp, stabbing, stinging pain that I MUST grab, or it drives me crazy. It is painful, and my arm looks like I have road rash as a result of the constant digging. The more I dig, the more it burn, stings, etc. My doctor put me on Neurontin for nerve damage, and it helped for a period of time, but not anymore. It is sensitive to heat and anxiety, it wakes me up, and the only thing that will make it go away temporarily is an ice pack directly applied to the skin. I have actually taken coolers with me when I have to drive somewhere, so that I will have my ice pack with me. Otherwise, it is unbearable. I have an appointment witha Neurologist, but now I am wondering if that is futile. I am just glad to know that I am not crazy...