Undifferentiated Schizophrenia Symptoms

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People with schizophrenia are generally diagnosed with one of 5 main subtypes of the disorder: paranoid, disorganized, catatonic, residual, or undifferentiated. Each type has specific characteristics that must be met for a diagnosis. A diagnosis of undifferentiated schizophrenia means that an individual meets many of the criteria for a diagnosis of schizophrenia, but does not have symptoms that clearly fit into the one of the other subtypes (paranoid, disorganized, catatonic, or residual schizophrenia).

There are certain symptoms that an individual must have in order to be diagnosed with any type of schizophrenia, so these will also be present in people with the undifferentiated subtype:

  • Two or more of the following characteristic symptoms, present for at least one month (unless successfully treated): delusions, hallucinations, disorganized speech, extremely disorganized or catatonic behavior, or negative symptoms (such as flattened emotions).
  • Significant decline in functioning in one or more major life areas (such as work, relationships, or self-care) since the onset of symptoms.

Other symptoms of undifferentiated schizophrenia can vary depending on the individual. By definition, this subtype is not defined by a clear list of characteristic symptoms. Symptoms may not always appear fully formed, may change over time, and/or may be a mixture of symptoms typically found in other subtypes (such as both paranoid and disorganized symptoms).

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