Some of these symptoms are also seen in other types of schizophrenia. The main difference is erratic behavior, with speech that is not grammatical or is random-ordered.
Diagnosis involves:
These tests can help rule out other causes of the symptoms.
International early psychosis association writing group. International clinical practice guidelines for early psychosis. Br J Psychiatry, 2005;187:s120-s124.
Addington D, Bouchard RH, Goldberg J, Honer B, Malla A, Norman R, Tempier R. Clinical practice guidelines: treatment of schizophrenia. Can J Psychiatry, 2005;50:7s-57s.