Is baldness an ailment...? It worked for the vikings and the samurai.
And I feel obliged to point out that Yul Brynner shaved his head in "The King and I." He wasn't actually bald.
...same thing with Krillin in DBZ. #shamelessgeek
I think it's an ailment as there are products and surgeries that are meant to reverse or cover up balding.
And Krillin is a special case. The guy shaves his head even as a child, he has no nose which he uses to his advantage in his first fighting tournament, and by the end of the series he's married to one hot android.