But in the absence of any bipolar symptoms this reactionary mood is sustained, for as long as it takes something else to happen that causes a different reaction and ultimately mood. It is in essence being all over the place emotionally, the exhaustion I mentioned above comes from either being all emotionally scattered or trying to not let everything affect you.

Example, if something causes a rage reaction, I will most likely be angry even after that something is gone or sorted. It doesn't dissapear with the something. If it was trivial or you are skilled enough to talk to yourself down, it can pass quicker, but still doesn't dissipate the mood completely but makes it more managable, until it does pass.

Idk if I make sense, these are definitly moods in reaction to things. Sometimes it passes quickly, sometimes it doesn't, sometimes you need a different trigger to get out of current mood.
Mania? No definitley not in the absence of bp but euphoria can be the a result at times.