bald spot
bald patch

His hair was a little thinner, and a bald spot had worked its way through.

But can this be true of his bald spot as well?

He has curly brown hair and a bald spot at the back of his head.

He touched the bald spot in the center of his head, then looked at me for what seemed to be a long time.

You have a bald spot at the top of your head, and I don't.

But what if you have a bald spot on the back of the skull?

Except for the bald spot, you might have been reminded of a young boy.

He pointed at a bald spot on one side of his head.

Many women said they had to cut their hair short to deal with bald spots.

The bald spot on the back of his head turned red.