My ds has the same problem but with hands/feet. His shoes are so bad it's not funny! Socks are stiff after he takes them off and throws them in the hamper...P U! He would leave drippy wet spots on mats at the gym where he would stand for only 5 seconds.
His is a medical condition...after some research it requires surguery for a 50/50 chance of success. Considering he's only 14 and very tiny for his age, I don't think so...I'll keep searching. I haven't taken him to the Dr for it and forgot when I'm because he's sick...maybe at some point I'll remember and ask.