hmm, i was reading about affect instability and the intense shifting. A study done regarding BiP and BPD and the moods.
Essentially possible to have a high intellect/higher energy/ low mood, resulting in a Dysphoric mania. In fact many combinations of moods depending on those three individual things.. Energy, Mood and Intellect and how they all sort of rollercoaster together, resulting in the affect instability.
Intellectual report here: Affective instability as rapid cycling: theor... [Bipolar Disord. 2006] - PubMed - NCBI
The 'plain english version' here: Rapid cycling and mixed states as "Waves"
This is probably old news to you but I had never heard of affect instability before reading it in my report.
"The same mechanism may drive both the rapid mood switching in some forms of bipolar disorder and the affective instability of borderline personality disorder and may even be rooted in the same genetic etiology. While continued clinical investigation of the use of anticonvulsants in borderline personality disorder is needed, anticonvulsants may be useful in the treatment of this condition, combined with appropriate psychotherapy.