first,it is psychiatry that must provide evidence that it is science.
the problem is not the symptoms but the causes.there is no evidence that the brain generates the symptoms.it seems that their families are the cause of these symptoms beacause they are authoritarian,no humor,bad communication, stingy,intolerant... .you must know that besieged workers have the same symptoms that schizophrenic
the fundamental feature in science is the power to predict.psychiatry can not do it or is at the same level that psychology,astrology,sociology,economy.so psychiatry is not science