My mother had a friend who had Cushing's syndrome and she had the classic moon face. She didn't let it bother her, though. She did her makeup to help create contours in her cheeks and wore her hair long and a lot of V-neck tops to help lengthen the line of her face.
She always joked and said at least she didn't have Graves' disease, which gives people bulging eyes. She said if she had that, she guessed she would just have to go join the circus. She didn't let it get to her. She was a great person and friend.