There are a growing number of studies concerning people with intellectually disabilities (ID) who offend, however
few studies systematically record prevalence of mental health problems. This article will attempt to determine the
prevalence mental health problems in people with ID who offend. Search terms were entered into the CINAHL, EMBASE,
Ovid MEDLINE(R) and PsycINFO databases. Studies were also selected through discussion with clinicians and
references from relevant papers. Fourteen relevant articles were found that indicated the prevalence of mental health problems
in people with an ID who offend. Mental health problems may be more prevalent in individuals with an ID who offend
than those with an ID who do not offend with schizophrenia/psychotic difficulties occurring more frequently. The
possible increased prevalence should be considered within treatment regimes in order to effectively rehabilitate individuals.