Harold and Tanya both have a wide range of schizophrenic symptoms that came on rather suddenly. Harold's symptoms have lasted for eight months; Tanya's have lasted only eight weeks. According to the DSM-IV their diagnoses should be

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According to the DSM-IV, schizophreniform disorder is diagnosed when symptoms last more than one month but less than six months, which fits Tanya's eight-week duration. Undifferentiated schizophrenia is diagnosed when symptoms last longer than six months without fitting into a specific subtype, which fits Harold's eight-month duration.

Harold and Tanya Both Have a Wide Range of Schizophrenic