The answer is NO.

Abuse cannot cause bipolar disorder.

A person can have a predisposition for bipolar and certain environmental stressors can trigger bipolar symptoms, but bipolar disorder is a neurological disorder. It is a disorder of the brain, a medical condition that can sometimes respond to environmental triggers.

Some people have bipolar disorder and were abused; some people have bipolar disorder and were never abused. The point is, people are born with bipolar disorder, no environmental incident can "cause" the disorder.

(Btw Gabyunbound, the thread you referred to has a lot of info in it that is incorrect.)