Small red bumps in a nickel size circle near elbow

[mp78]

I originally had small red rashy bumps appear under my bicep, two weeks later I noticed a small ring of red bumps right below my elbow. The ring is formed by distinct, unconnected bumps and is about a nickel in size.  The center of the ring is clear.  The bicep bumps are all distinct bumps NOT creating a continuous rash. They are the same bumps, but the elbow bumps are the only ones that form a distinct ring.  I have looked at pictures of other skin diseases and found nothing similar (including tapeworm).  When it first developed it was extremely itchy but now (2 months later) it is not itchy at all. I have not noticed any other rashanywhere else, nor have I seen any more spreading since the inital move from bicep to elbow.  Both locations still have the rash...