Schizophrenia is a severe mental disorder characterized by delusions, hallucinations, incoherence and physical agitation; it is classified as a "thought" disorder while Bipolar Disorder is a "mood" disorder.
It is estimated that 1 percent of the world's population has schizophrenia. While there is evidence that genetic factors have a role in developing schizophrenia, other unknown causes play a significant part as well.
While bipolar I disorder may include psychotic features, schizophrenia cannot include mood swings. schizoaffective disorder bridges the gap between bipolar disorder and schizophrenia.