So true. I know a guy who is brilliant that has this problem. Takes his meds all is cool. When he decides to suspend I get a phone call reminding me to be wary of my toothpaste. Hard to understand unless you have seen it up and close.
It’s more telling if you know them prior to medicine. I dated a girl who was bipolar. She was tolerable in small doses. She was capable of being really sweet but you eventually began to annoy her and she became unbearable.
I hang out with her now and she is medicated. But if she gets off her meds, she can be a demon. It’s like that “capable of being sweet” trigger is gone. The medicine destroys the coping mechanism.