Pain in psychosis

After browsing through the abstracts of over 400 articles (and, of course, only really scan through the abstracts with the key words pain and schizophrenia highlighted), I found two articles which provided reviews on pain perception in psychotic patients....

Hypoalgesia in schizophrenia is independent of antipsychotic drugs: a systematic quantitative review of experimental studies. (Potvin & Marchand, 2008)

http://www.ncbi.nlm.nih.gov/pubmed/18160219

Pain Insensitivity in Schizophrenia: Trait or State Marker? (Singh, Giles, & Nasrallah, 2006)
http://journals.lww.com/practicalpsychiatry/pages/articleviewer.aspx?year=2006&issue=03000&article=00004&type=abstract (sorry for the long link)

The references used in these two articles would be a good starting point for whoever interested in research concerning the perception of pain in patients with psychotic symptoms.