I find the whole class of anti-convulsant mood stabilizers very interesting. They are also sometimes prescribed as migraine preventative medications.
It’s fascinating how these compounds have these multiple indications. It raises question to how the underlying mechanisms of these conditions may interact.
A major component of NPD is it’s harm to the sufferer’s interpersonal relationships. I think the behaviors that contribute to this, though diagnostically and medically relevant, are generally deservedly stigmatized.
This is, of course, different from the armchair diagnosing someone with NPD just because they exhibit some of these behaviors, which I do think contributes significantly to the stigma of mental illness.
Ultimately, someone with NPD is more than their diagnosis and can certainly be capable of interpersonal relationships that are worthwhile to all parties involved.