I guess this isn't exactly a health thing, but it's related to skin, so figured this was the best spot to post this.
Luke has two bald patches on his head. They're almost exactly symmetrical on either side, in front of his ears. You can see them in the picture (one side is harder to see). The spot on his left side (right side of picture) is a bit larger than the other one, but otherwise they looks almost the same.
He's had them since as long as anyone knows. The spots are visible in pictures taken by his foster family when he was just a couple of months old, when he was rescued from the shelter.
The rescue group had their vet check him out and do scrapings, and our vet did the same. Seems it's just some sort of scar, I guess. No mange, fungus, or anything like that. Since we've gotten him, the spots have gotten a tiny bit bigger, but that just seems to be from his overall growth.
Everyone always asks what happened to him, but we just don't know. So this is just to satisfy my curiosity.
We joke that we're going to get him horn implants there.