You are wrong. Those diseases like schizophrenia and bipolar disorder are often treated by neuropsychiatrists.
The physical problem in the brain still exists... like with epilepsy that is triggered in the frontal lobe. The symptom of epilepsy... the actual seizure is treated by a neurologist. Medications like lamictal, tegretol and depakote are often used.
And with bipolar disorder these same medications, as anti-convulsants, as well as anti-depressants, and ECT are common courses of treatment. ECT, which causes a grand mal seizure, changes the chemistry almost miraculously. And people who have gone through an initial round of ECT (up to 20 treaments) sometimes return for an ECT “booster”. Just four or five treatments alone will miraculously bring the patient back from the edge of severe suicidal depression.
Epilepsy is a physical disease.
Bipolar is not, nor is schizophrenia.
Read what Baughmann says - he is a neurologist. There is no measurable physical test for bipolar, for example, like there is for epilepsy. What psychiatrists do to treat mental “illness” is the equivalent of throwing mud at the wall, hoping some of it will stick.
Have you read Peter Breggin’s book - Toxic Psychiatry ? And yes, he’s a licensed psychiatrist.