Is there a doctor in the house? (A dermatologist, perhaps?)

My son’s pediatrician is an hour drive away, and I’m not terribly fond of him, so I try to avoid him if at all possible. So, I’m asking the FlutherDoc’s opinions first, and I’ll see Dr. Patel if I have to. ^_^

My son is almost two. No medications, no known allergies. He’s a healthy weight and height, and he eats well.

For about six months, he’s had what I thought was cradle cap – a little bit of dark, somewhat scaly, patchy discoloration under the hairline on the crown of his head. It kind of came and went for a while.

One day, about a month ago, we went to the beach, played in the sun and the saltwater. When we came home, the rash had turned reddish and became more prominent. I used a spray sunscreen that turned his hair orange for a few days so I assumed that was what did it. I’ve waited since then for it to diminish, but it hasn’t.

It doesn’t appear to bother him (I never see him scratching it), but it’s worrying me that it hasn’t gone away on its own.

Pictures are
here

here

and here

Any ideas, my genius Jellies?