There is a stigma of schizophrenia, and there's a stigma of depression, etc. but they're not the same stigma. We're told it's a myth that "the mentally ill are violent" - [but] no-one thinks depressed or anorexic people are violent. They think (roughly) that people with psychosis are. They have other equally silly opinions about each diagnosis, but there's no monolithic "stigma of mental illness".