The first thing that came to mind is that you may have had a "mini" stroke or 2. When those happen, normally there are no outward signs one can point
After reading you are bi-polar, if this only happens on the "up" cycle, then medication should help.
I know that meds for bi-polar dampen the cherished "up" times,
but trust me those around you find the "up" times hell on earth to be around you.
At any rate, you definitely need to see a neurologist and a psychiatrist.
While others here say it happens to them, heck it does to all of us sometimes,
the frequency you suggest is not normal.
You never indicated you are on bi-polar meds, if not please for the sake
of your family and co-workers, get on meds.
The depressive cycle at it's worst makes it difficult to be around
the whining and self depreciation after awhile.
The manic cycle, while pleasant for you,
I can tell you from experience is literal hell for everyone around you.
The you that is pleasant to be around is the mildly depressed you.
When you start to go "up" (enter the manic phase),
the tension in people around you increases
waiting for your explosions that you get over so fast
you don't even realize you have exploded,
that emotionally devastate others.
edit on 10Thu, 02 Apr 2015 10:18:58 -0500am40204amk024 by grandmakdw because: addition format