Category: Authors/BPD/Knowing Yourself/Make a Difference/Mental Health/Readers Stories/Shannon/Suicide/treatment Diagnosed with borderline personality disorder — BPD and me Posted On 30th January 201829th January 2018 By 1in4 I was 16 when I was first diagnosed with borderline personality disorder. It’s a horrible illness but it doesn’t define me or anyone else who suffers it.