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Delusions: Delusions are strange beliefs that are not based in reality and that the person refuses to give up, even when presented with factual information. For example, the person suffering from delusions may believe that people can hear his or her thoughts, that he or she is God or the devil, or that people are putting thoughts into his or her head or plotting against them.
Hallucinations: These involve perceiving sensations that aren't real, such as seeing things that aren't there, hearing voices, smelling strange odors, having a "funny" taste in your mouth, and feeling sensations on your skin even though nothing is touching your body. Hearing voices is the most common hallucination in people with schizophrenia. The voices may comment on the person's behavior, insult the person, or give commands.
Catatonia (a condition in which the person becomes fixed in a single position for a very long time).
What are the positive symptoms for Schizophrenia?