I agree with the suggestion to ice it. Last September, I was plagued with a mysterious itching on my right forearm. It lasted until mid-December...no joke! My dermatologist suggested that it was some type of nerve-related issue. She told me that pain and itch both travel along the same nerve pathway, and that some people experience "mis-fired" pain signals that surface as an intense itching. I truly believe that this is what I had with my forearm itching, because we ruled out any other allergic-related cause. For me, ice was the ONLY thing that brought me instant relief. I literally had to keep 4 to 5 ice paks in my freezer at all times, because as soon as one got warm...I needed to get another on my arm immediately. I had to sleep with icepaks on my arm all night long. I even had to keep icepaks in the freezer at work, so that I could rest my arm on an icepak while working at my desk. It was the only way I could sanely get through a day. Then, as suddenly as it came on, it disappeared in mid-December and I haven't been bothered by it since then. However, I've been told that it can be a seasonal condition that recurs...so I'll have to wait a few more months to see if it crops up again. But yes, ice will definitely kill the itch.
Linda
2012 Seven Axiom SL - Specialized Ruby SL 155