I have the exact symptoms as you. Mine started 5 months ago. I get tingling in both arms and my left leg - sometimes my back. The tingling is constant. I'm usually okay in the morning and then as the day progresses, it gets worse. I've had blood tests done by my GP, a neurologist and the gyno. I've had an MRI, nerve conduction and emg tests. You guessed it - nothing wrong with me. My doctor tried my on Lexapro in the beginning, but just the thought of taking it freaked me out, so I stopped. I decided to give it some time. Sometimes the tingling is dealable, sometimes it makes me so upset I take xanax. The sad part is the only thing I'm anxious about is the anxiety itself. It's like a vicious cycle I can't break. When I'm busy and distracted, its not as bad. Nightime seems to be the worst time for me. I have an appointment next week and I''m going to ask my doctor if I can do lexapro again.