I was diagnosed with Schizophrenia before until my Psychiatrist witnessed my mania that came years after he made that diagnosis. Turned out I have Bipolar 1 with Psychosis. Misdiagnosis happens quite often I think, due to the nature of mental illnesses that often mimic each other. There is nothing to lose in getting a second opinion.

I think I have the right diagnosis now though sometimes I tell my partner "I don’t have Bipolar/Psychosis, I am perfectly healthy!" but this just means that I need to take my meds, ASAP