Schizophrenia is a heritable, common, complex, mental disorder, affecting 0.5-1% of the population. It mostly presents with several episodes and tends to become chronic. It is characterized by disintegration of thought processes and of emotional responsiveness, most commonly manifesting as auditory hallucinations, paranoid or bizarre delusions, or disorganized speech and thinking, and it is often accompanied by significant social or occupational dysfunction. The onset of symptoms typically occurs in young adulthood. Onset may also occur in childhood (Kinros et al., 2010).