This is another thing that disproves the mental health field as a legitimate medical practice or science. When you see a mental health professional there's no medical testing whatsoever except for taking a generic test for symptoms of mental illness, usually a checklist that just about anybody could answer yes to.
There's no testing for toxins, possible head injury, a bad reaction to medications, or a number of other things that can effect someones thinking or behavior. This might sound conspiratorial but is it possible fluoride in the water supply could be affecting a large percentage of people, GMOs, the huge amount of additives and preservatives in our food supply many of which are actually toxic, and daily exposure to environmental toxins but the MH system completely ignores all of this. Also the psychiatric medications can actually mimic symptoms of mental illness.