Does yaz (drospirenone and ethinyl estradiol) contraception ever cause teenagers to have suicidal thoughts?

No: While mood may be effected, even PMS improved, birth contol pills do not cause suicidal thoughts.

Yes: It is possible for any hormone to cause a change in a person's normal moods. That includes hormones contained in birth control pills as well as androgenic hormones like testosterone. The mood disturbances caused from exogenous (from outside the body) hormones can become so severe that a person can even feel suicidal. I would discuss with your prescribing physician immediately any such symptoms.