I don't think it causes schizophrenia, high CBD strains have actually been shown to be helpful for some schizophrenia patients. What I was saying is that when I smoked it I would have mini-psychotic episodes. Still considered psychosis, just not schizophrenia. If you checked out that link they show that if the dopamine in the striatum gets too low (brain damage from marijuana!) the drug can cause psychosis. Fortunately brain damage is often reversible. They still aren't sure what causes schizophrenia, I'm pretty sure I carry the "gene" but don't have schizophrenia, I have other mental health problems but not schizophrenia. The same gene that they believe causes schizophrenia causes bipolar, ADHD, Major Depressive Disorder, Autism etc. You said you have ADHD, so it probably does "run" in your family. Source: NIMH · New Data Reveal Extent of Genetic Overlap Between Major Mental Disorders