I had symptoms of bipolar disorder as far back as maybe 11 years old. Even at that time, I knew something was wrong with me. I definitely had depression, long periods where I would be in a crappy mood all the time and I wanted to isolate myself from people. During high school I had deep recurring depressive episodes that grew worse.
On the other hand, I realized I could anticipate when a hypomanic episode was on the way; I almost felt like I could hear it coming in the distance, and I knew it would cause me problems. I called it a “dangerous mood”, and it was during those times that I said and did stupid and hurtful things without regard for consequences or safety. I also developed a lot of obsessive thinking and rumination during that time. While that is not necessarily a symptom of bipolar, it was another facet to my struggle with undiagnosed mental illness.
My symptoms became worse as I moved into my 30s. When I was mistakenly diagnosed as having unipolar depression, I believe taking the anti-depressants made things even worse. Soon thereafter I went into the hospital, but the roller-coaster ride continues to this day.
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