I have a friend who smokes way too much and doesn't take care of himself. The color of his skin is a yellowish tint and he's lost a lot of weight. He doen't eat right and looks terrible. Just recently I noticed he has these patches or blister on his eyelids and under his eyes. They are starting to worry me and he won't get check out by a physician. Do you know what they could be. They are slightly lighter than his skin tone (orange/brown).