MY SON LUCAS WHO IS 4 1/2 HAS BASICLY NO HAIR FOR WELL OVER 12 MONTHS BUT IN THE LAST 3 OR SO WEEKS HE HAS HAD THIS FUZZ THAT IS BECOMING MORE AND MORE VISABLE AND YOU CAN EVEN FEEL IT WHEN YOU RUB HIS HEAD , IS THIS A SIGN OF HIS HAIR BEGINING TO REGROW ?