The self harm you mentioned is common with BPD "borderline personality disorder" it is a rotten name and they have been wanting to change it since the 50's, it is an emotinal illness and bi/polar is common with this disorder as is OCD "obsessive compulsive disorder"
It is not uncommon for a BPD to have both these other mental illnesses. BPD is one of the most common illnesses for women in the JW religion.
Usually people with this disorder come from abusive homes or have been neglected as a child, it is most common with women, and is one of the most misunderstood mental illness around, yet in America it is very common and millions suffer from this disorder.
Reading up on this disorder is very helpful as it may help those that have been diagnosed with bi/polar and feel that they are not getting anywhere just with medication alone, to look into coucilling or phychologist.