I (21F) was diagnosed with bipolar disorder at 18. My sister (28F), who has BDP and ADHD, seems to be having a bit of an identity crisis. Now I understand that there are overlaps between bipolar and BPD. So it’s not impossible that she has it. But I’m sensing something off with her for a while now. 

She asked me about the symptoms of my manic episodes and I explained them to her. But as I was speaking, she continued to interrupt me, almost in an attempt to one-up me. But ultimately, when I explained my delusions of grandeur, we both realized that her problems were more linked to anxiety. 

She would ask me about this mobile uno game that she plays. She spent a considerable amount of time and cash on the game and was convinced it was a manic episode. 

I recommended she see my psychiatrist and she responded “If anyone will give me a bipolar diagnosis, it’s him!” This, and some other scenarios, leads me to believe that this is a label she actually wants, and I just don’t understand why anyone would want this.

Maybe I’m misreading the situation and she’s actually just concerned about potentially being bipolar, but it seems more to me like she’s actually anticipating a diagnosis. I asked my mother and she agrees that my sister has a bit of a persecution complex. Am I reading too much into this?