I have experienced some of this. Felt several times like an allergic reaction without outer symptoms. I am not sure what it is but do feel it is related to treatment. When I told Boaz he asked me alot of questions and then changed my protocol. My first guess with me would be it is yeast. I got to the point I wished I could have a rash because that is a sign it is leaving the body.  If you do not have an appt soon I would make one. Maybe the doctor can at least explain whats going on and relieve the fear if nothing else. I hope you feel better. 

I itch on and off every day, no rash right now either. A few months ago I had extreme itching felt like I was going insane it was so bad, I just wanted to scratch my skin off, I had a bad rash all over with it though. Dr Brizman said it was a great sign and changed my prorocol, it lasted 6 weeks for me. I don't know how I got through it but I did, she said the lymph was clearing out. Look at it as a great thing but do let them know what is going on.