I'm looking for a specific latin or greek word that describes something like the inability to empathize with emotions that are not in line with one's current affective state. It could probably be described as a temporary or permanent deficit in affective perspective-taking that occurs when a person feels that their current emotional state is the only possible state, and that it is permanent.
For example, when someone is experiencing negative affect for some reason and then proceeds to act as if their day, or even life, is ruined, and that this negative affective state is the new norm. Or when someone is experiencing positive affect for some reason and then naively believes that "it will always be like this," perhaps getting very distraught when the positive feelings eventually go away but at the same time not being able to see this pattern from the outside or take long-term steps to prevent this type of roller coaster dynamic from continuing to manifest.
I have consulted various psychology resources and literature online but have not been able to, again, find the term which accurately captures this concept. I've found the following terms, "emotional myopia", "emotional reasoning", "anosognosia", "presentism", "presentist bias", and "egocentrism", which I feel are fairly close. But, apart from "emotional myopia" and perhaps "affective presentism", I feel the concepts I have found are either too general (egocentrism, emotional reasoning) or incorrect (alexithymia, affective agnosia).
The specific term I have previously seen is a single greek or latin word and is very specific, like the term "anosognosia". As a caveat, it might be worth saying that the description and example of the phenomena above might be slightly, but not vastly, out of sync with the term I am looking for.