I hadn't a clue! But then again I was in the middle of a manic episode and I thought it was just me having fun. The depression and low times were just something I had to deal with, part of life sort to speak. The highs were just fun part of my life and I was living the life. It was the gf who first noticed it and then the therapist my gf forced me to see. It wasn't until I came down from the high (due to meds) that I saw that I was displaying classic bipolar symptoms.