Drama can be defined as excess passion: emotionality above reason and caring. That puts passionate somewhere in the middle of a scale from utterly detached to raving lunatic. Drama and passion are both disjoint and on the same slippery slide rule. The threshold should be obvious to anyone who questions their motives frequently.
Releavnt behavior I watch out for are, roughly: manipulation, evangelicism, excessive criticism, egotism, depression.
On a brighter note, I just had a mineola orange that was oh-so-juicy, beautiful and fragrant. :) I got one drop of brilliant juice on my shirt. Mmm.