Yeah, he knows. His own head is pretty scary at times. He's frowning at your expression, Kylo. Don't think he hasn't noticed.

As for the question; "Well, there could be a condition that affects someone's... private areas that we need to diagnose and treat or heal. It could be something embarrassing, too. I couldn't tell ya how many patients I've come across who haven't told me something serious because of their pride."