Sores On My Head My Cat Has Strange Sores On Head And Neck. What Are They?

My cat has strange sores on head and neck. What are they? - sores on my head

In recent weeks, my cat has developed three circular wounds. One in the neck near the ear and the other on the cheek. They seem to grow too fast. He acts completely normal. I make an appointment with the vet tomorrow but wondered if anyone knew what it would be the description. I have two cats and they seem good.