I have an area on my back, just above the right shoulder blade that itches constantly. This started about 6 months ago and at that time it was just occasionally itchy . Lately, it is all the time. The area is smooth, I cannot see any rash, marks, effects of potential bug bite, etc., it just itches. Initially, I would put hydrocortisone cream on and that seemed to soothe it somewhat. I now have tried numerous OTC creams, relief from these is very short term. I am at a loss as to the cause, how to alleviate. Thoughts?