Another red spot on penis question

In the last 7 days I've noticed a single red spot form on the outer ring of my tip (I dont know the technical term, I'm circumcised, the ring between the tip and the shaft, the red spot is on the shaft side of the ring if that makes sense). It's not big but big enough to be noticeable, not painful, and the skin has flaked off it twice, once with a bit of provocation, and the other time after masturbating. Just wondering if anyone had any thoughts on what it might be. I'm off to see a doctor as soon as possible. I'm 29 and sexually active. Thanks in advance.