Sorry to hear that Nebo is experiencing some discomfort with the itching situation. I am guessing it might be a bug bite and he has scratched the heck out of it resulting in scabs and his fur coming out.

I would just keep an eye on it and see how it looks in a few days. If the problem persists in that area or other parts of his body, then a trip to the vet is in order!!

Hugs to you and Nebo.