Can i develop bipolar disorder after being on almost all the antipsychotics for over four years. diagnosed paranoid schizophrenic. ?

Bipolar?: Anti-psychotics do not cause bipolar, though they are sometimes in the treatment of it. Also, you can be both bipolar and schizophrenic, though you would likely have been diagnosed as bipolar before.

See below: Some likely scenarios are that it was not possible to see the bipolar symptoms clearly at first but bipolar was the problem all along or that bipolar symptoms show up in addition to schizophrenia symptoms, which is called schizoaffective disorder, bipolar type. Hope this helps.

Diagnosis can change: It is possible that your doctor may conclude that you have a bipolar condition that was not initially apparent. There also is a diagnostic category named Schizoaffective Disorder where there can be major mood episodes ( major depression or manic) concurrent with the criteria of schizophrenia. The important thing is that you have a doctor who is working with you to find the best treatment.

First please have a complete physical examination to know if you have an illness. If not, your medication should be managed by a Psychiatrist. If you are not confident in your Doctor please see another for a second opinion. Please see a Clinical Psychologist with expertise in multiple types of psychotherapy to help.