What do we know and what do we not know about schizophrenia?

The concept of schizophrenia has remained unchanged since its inception by Kraepelin and Bleuler.

There is a consensus that the symptoms of schizophrenia can be grouped into three specific dimensions.

The incidence of schizophrenia is the same across all cultures and independent of gender.

Immigrants have a higher risk of developing schizophrenia, especially if they have dark skin and migrate to an area with a dominant group of light-skinned people.