Schizophrenia patients have an impaired ability to recognize others' faces, specifically with respect to initial detection, memory retrieval, and to a lesser extent discrimination.
Chen, Y., Norton, D., McBain, R., Ongur, D., & Heckers, S. (2009, January). Visual and cognitive processing of face information in schizophrenia: Detection, discrimination and working memory. Schizophrenia Research, 107(1). 92-98. Retrieved January 18, 2009, from http://dx.doi.org/10.1016/j.schres.2008.09.010. The full article can be accessed at ScienceDirect for $31.50.
Medwire News (2008, October). Facial detection and recall impaired in schizophrenia. InPsychiatry.com. Retrieved January 18, 2009, from http://www.inpsychiatry.com/news/article.aspx?id=78576