Mental Health borderline personality disorder & violent dissociation

[psynce of sound]

I have been struggling with BPD and other comorbid issues for years. Recently I have recently started having episodes of memory loss and a tendency to violence. (I'm normally incredibly calm and pleasant). I'm really concerned I may come round and have done something really bad.
I don't know how to put this across to a professional health person. Any suggestions? I want help but not sectioning.