Schizophrenia is characterized by positive and negative symptoms.
Fundamental symptoms included thought disturbance, withdrawal, and difficulties managing affect. Symptoms may also be non-schizophrenic in nature, including anxiety, depression, and psychosomatic. The following examples of a disorder in thinking is the key symptom for a diagnosis of schizophrenia. People with schizophrenia may have bizarre thoughts, avoid social contact, behave oddly, ignore their personal hygiene, or appear menacing. Their speech may be hard to follow, moving for one topic to another in not logical pattern.