Which Type of Doctor should I make an appointment with. My Son is 20 , has had asthma most his life but very funcitonal. He has recently developed a pretty significant case of Exzema , and although he has always easily got stretch marks. ( and alot of them) …. Although always been in great shape and an althlete. he is getting significant very large redish purple stretch marks all over - mostly hips arms, arm pits, legs, groin… But very big. Not sure who to see for this…..