Do teens get separation anxiety disorder, and what would it look like?

Teen anxiety: It is truly difficult to be a teen. They are going through a stage of development where they strive (sometimes obnoxiously) to be independent and their own boss, but they still have fears of being on their own, of not being safe, of losing the support they've taken for granted. The symptoms would usually be anxiety and/or depression (any may well include a lot of anger), also substance abuse.