I am a psych major...I know lots about schizophrenia.

Smoking pot and doing other substances will only bring on schizophrenia if you have a predisposition to it. Drugs can and may trigger schizophrenia in some cases.

There are 2 kinds of schizophrenics...your functional and your non functional.

As far as the extent of the schizophrenia it very much varies from person to person. Some have paranoid schizophrenia where they are constantly paranoid about their delusions, and some just have straight up weird delusions..not necassarily paranoid.

It usually shows up from mid to late adolescents.
...it is also genetic.

My uncle has it, it is really quite a sad disease.

One of the hardest parts of a schizophrenic is trying to get them to take medication to help their symptoms. Many don't believe they have any problems at all.

They are really hard to help, and it's really sad. Like my uncle for instance, I haven't even seen him since I was 3 years old.

I would say smoking marijuana depends on the schizophrenic as to how it will affect them. I know schizophrenics that you wouldn't even realize they were schizophrenic...then you got your schizophrenics which can't hide it.