Boots had sores on his back

We didn't know what was happening to him. We have another cat and a dog who had no problems. But I found out the problem. We took Boots to the Vet and she said Boots is very sensitive to flea saliva. So, if he goes outside and gets bitten, he's going to scratch until he has a sore. . .

He got a shot for the itching and some strong topical flea treatment.

I hope his hair grows back and that he feels better. :(