From Wikipedia:
Individuals with schizophrenia may experience hallucinations (most reported are hearing voices), delusions (often bizarre or persecutory in nature), and disorganized thinking and speech. The last may range from loss of train of thought, to sentences only loosely connected in meaning, to speech that is not understandable known as word salad. Social withdrawal, sloppiness of dress and hygiene, and loss of motivation and judgment are all common in schizophrenia.[17] There is often an observable pattern of emotional difficulty, for example lack of responsiveness.[18] Impairment in social cognition is associated with schizophrenia,[19] as are symptoms of paranoia. Social isolation commonly occurs.[20] Difficulties in working and long-term memory, attention, executive functioning, and speed of processing also commonly occur.[11] In one uncommon subtype, the person may be largely mute, remain motionless in bizarre postures, or exhibit purposeless agitation, all signs of catatonia.[21] About 30 to 50% of people with schizophrenia fail to accept that they have an illness or their recommended treatment.[22] Treatment may have some effect on insight.[23] People with schizophrenia often find facial emotion perception to be difficult.[24
https://en.wikipedia.org/wiki/Schizophrenia
