Scizophrenia Positive Symptoms

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signs and symptoms
  
Schizophrenia is a mental disorder characterized by significant alterations in perception, thoughts, mood, and behavior. Symptoms are described in terms of positive, negative, and cognitive symptoms. The positive symptoms of schizophrenia are the same for any psychosis and are sometimes referred to as psychotic symptoms. These may be present in any of the different psychoses, and are often transient making early diagnosis of schizophrenia problematic. Psychosis noted for the first time in a person who is later diagnosed with schizophrenia is referred to as a first-episode psychosis (FEP).

Positive symptoms
Positive symptoms are those symptoms that are not normally experienced, but are present in people during a psychotic episode in schizophrenia. They include delusions, hallucinations, and disorganized thoughts and speech, typically regarded as manifestations of psychosis. Hallucinations occur at some point in the lifetimes of 80% of those with schizophrenia and most commonly involve the sense of hearing (most often hearing voices) but can sometimes involve any of the other senses of taste, sight, smell, and touch. The frequency of hallucinations involving multiple senses is double the rate of those involving only one sense. They are also typically related to the content of the delusional theme.Delusions are bizarre or persecutory in nature. Distortions of self-experience such as feeling as if one's thoughts or feelings are not really one's own, to believing that thoughts are being inserted into one's mind, sometimes termed passivity phenomena, are also common. Thought disorders can include thought blocking, and disorganized speech. Positive symptoms generally respond well to medication, and become reduced over the course of the illness, perhaps related to the age-related decline in dopamine activity.

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