The negative symptoms of schizophrenia are decreased expressiveness, apathy, flat affect, and a lack of energy. Brief and non-conversational pattern of communication by the patient is an example of negative symptom of schizophrenia. Seeing lions in the hall is a hallucination, while believing to be the president’s son is likely a delusion; these are positive symptoms of schizophrenia. Wearing mismatched, unclean clothes may be an indirect manifestation of the disease and a decreased ability to care for the self.