According to NAMI, it’s estimated that 1.6% of the adult U.S. population has BPD (but that number may be as high as 5.9%). People with BPD might experience mood swings, unstable personal relationships, periods of intense depression or emptiness, uncontrollable anger, dissociation, and more.
BPD’s causes aren’t fully understood and it’s sometimes misdiagnosed as PTSD or depression. And unlike, for example, anxiety or depression, BPD is a mental illness that’s not often portrayed or explored in pop culture. (Or, at least not accurately!)