The top red dot is the same spot where he had what we suspected was a cat bite. It scabbed up a tiny bit, but healed fine and all of the hair was starting to grow back. last night, Oscar had this much larger bald spot and the two tiny little red dots. I had been outside with him earlier in the day and this wasn't there, it just showed up.
He also has a small bald spot on the under part of his neck (he's had that since he had the other bite wound). I showed it to the vet, and he did a black light test to make sure it wasn't fungal, but nothing showed up, so he said it was probably just from the same fight that he got the other wound from.
Googling hasn't helped much. I can't find any fleas on him. The only other suggestion I found from google was that he could be scratching too much due to stress, but what would the two red pin pricks be?