I can only tell you about my husband:

He was originally Dx'd with depression. Each medication change seemed to make him more and more agitated. It got to the point that if he was upstairs yelling at my son I would not go up there for fear that I would just make things worse and it would turn physical. I kept telling pdoc (we shared one) this is the worst I've ever seen him and he's scaring me but she didn't listen and told him he needed anger management. Then didn't give him a referral. She then told me that it was me and my issues not him. He eventually ditched the meds and things got better.

Until he got a job, he did well for the first couple of months. Then he fell apart, he needed a dr's letter to go back to work but no GP would give him one. So he entered the mental health care system. Immediately he was preliminary Dx. bipolar from his history. Since BP meds he's done tons better but still can't hold a job.

It is possible to have SAD and bipolar.