For a person who suffers from schizophrenia but responds well to treatment, what are the implications in using cannabis and alcohol?

Is it possible to diagnose an 8-year-old child with schizophrenia? Can schizophrenia be detected in children? And if so, how might the treatment of a schizophrenic child differ from that of an adult?

Please define residual schizophrenia. What are the symptoms? Are there any known treatments for this condition?

Talking of protocols in Alzheimer's disease research, can memory enhancers work for non-Alzheimer's people?

Are there risks associated with taking statins for periods of 10 to 20 years?

What can be done for someone suffering from severe social phobia? (A person who blushes extensively and is tense.)

Are mental illnesses less frequent in "primitive societies"? What about suicide and anorexia, in particular?

I've read that patients suffering from schizophrenia have high levels of dopamine. Are high dopamine levels the cause of schizophrenia or a consequence?