Schizophrenia is a serious mental illness characterized by incoherent or illogical thoughts, bizarre behaviour and speech, and delusions or hallucinations. Schizophrenia typically begins in young adulthood, and causes can be due to genetics, environment, and psychological and social processes. Delusions are beliefs that usually involve a misinterpretation of perceptions or experiences. Schizophrenia is a treatable illness, like many other types of medical illnesses. Early diagnosis and treatment can help the person affected get back to living their lives. Understanding and support from others is an important component in the recovery process.