Hay has a abscess


My cat Hay is 15 years old. He has an abscess for the past few days on his face by his mouth. I think my other cat Pukie scratched him really good. He rarely goes out at night. So I don’t really know how it happened.
Last night when I got home from work the front room smelled so bad. It was my cat. This morning I got up and took him to the vet. He barely had any skin left by his mouth after they cleaned him all up. Poor Hay.
When my kitties are hurt I feel hurt for them. I also had his blood checked. The vet thought he might have hyper thyroidism or has kidney trouble. I will find out on Tuesday. In the meantime, he is on antibotics and my son or husband are draining the yek. I just can’t stomach it.
But thank the cat Gods the smell is gone.