Can you please explain borderline personality disorder like when budding in teen?

With teens I try: Not to use personality disorders as a diagnosis. I assume that teenagers personalities are still developing and have not reached the rigidity that pds have. The upheaval in growth, hormones surging and rebelliousness usually pass and a clearer diagnosis of what is happening will come in time. It is hard for parents during these years. Putting a pd label onto a teen is premature and may do damaging.