| Prevalence |
Approximately 0.6–4.6% of the general population has schizotypal personality disorder. |
| Comorbidity |
Common comorbid personality disorders include other Cluster A personality disorders (McGlashan et al., 2000), as well as borderline, avoidant, and obsessive-compulsive personality disorders (Raine, 2006). Common comorbid psychological disorders are major depressive disorder, social phobia, and panic disorder (Raine, 2006). |
| Onset |
Symptoms emerge by early adulthood. In childhood and adolescence, symptoms may include social isolation and social anxiety, academic underachievement, hypersensitivity, odd fantasies and thoughts, and idiosyncratic use of language. |
| Course |
Although schizotypal personality disorder most commonly is stable over time, symptoms may improve for some people (Fossati et al., 2003). In fact, for almost one quarter of patients, symptoms improve to the point where they no longer meet all the diagnostic criteria (Grilo et al., 2004). Among other patients with this disorder, the opposite is true: A small percentage go on to develop schizophrenia or another psychotic disorder (Grilo et al., 2004). |
| Gender Differences |
Schizotypal personality disorder is slightly more common among men than women. |
| Source: Unless otherwise noted, the source is American Psychiatric Association, 2013. |