No idea if it is common. But I had a hard time making them understand I wasn't psychotic at the beginning. I read my records and found some clues. The doctor thought I didn't show proper affect, I laughed at things she didn't see as funny. And at the wrong times. According to her. At least in the past that used to be a sign of schizophrenia if you didn't show proper affect. Doc thought I was overall weird and that she didn't get any "emotional" contact with me, and that also was seen as a sign of schizophrenia.

These days they should know better.