This eye-tracking disorder seems to he inherited. The course of schizophrenia is different for males and females, for example, the age of onset is typically earlier for males. This may be a clue to a hormonal connection. Some schizophrenics have a greater density of dopamine type 2 receptors than the regular population. This may be inherited.
Some schizophrenics have abnormalities of left or right brain functioning.
The left brain seems to be most affected. Some with schizophrenia have memory system, arousal system and attention system abnormalities. A common neurotransmitter system may be implicated. The outcome in schizophrenia is better in the long term than in the short term. Aging seems to reduce the symptoms.