cat's question about Swelling

Question

I have a 1 yo male, neutered cat.  For the past 4 months he keeps getting these lumps on his face.  He's being treated by my vet and he can't seem to get to the bottom of it.  One bump will go away and then another one appears.  The latest one if at the corner of his mouth.  During today's vet visit, he discovered a rather large ulcer on his gums.  Have you heard of anything like this.  He is UTD on his shots, acts totally normal - eating, drinking, playing, etc.  I'm so worried about him.

Accepted Answer

I'm sorry to hear this. 
My first thought would be that he may be experiencing feline Eosinophilic Granuloma Complex. We can see the development of various ulcers and lumps that can be red and itchy.
For some, it is a reaction to e.g. fleas or food.
A biopsy should confirm or exclude this diagnosis.
In the mean time, medicine like steroids and antibiotics may help.
Hopefully we get on top of this soon.

Swelling in Cats