Bipolar Disorder Support Group
Bipolar disorder is not just a single disorder, but a category of mood disorders marked by periods of abnormally high energy and euphoria, often accompanied by bouts of clinical depression. This is the place to talk about your experience with bipolar disorder, learn from others' experiences, and find support.
On some of them I had no emotions/feelings at all
NOTHING, DEAD NO NEED FOR CPR
For example, and only an example, it is not unheard of for people who suffer long term pain to self medicate and form an addiction, that could be what is being seen. Just an example, not suggesting anything about your friend.
I suggest talking to them about it and have them talk to their doctor.