Hi, I have a cat that is 2.5 years old. Not an Abyssinian breed. Just a regular gray tabby. In the recent months, I've been noticing the exact same small round spots on his ears that you talk about and show in your pictures. It was just one at first, but now it's multiplied, and I can count around five small spots. It's more noticeable when he is sitting at the windowsill and sun is shining on his ears. He's been scratching a little more at his ear too. I am really curious to know if you've found out the cause of these small bald pots. Any update in your cat's case would be well appreciated!