slimsally wrote:Also, I didn't know SPDs are sometimes also dx'd with autism. I assumed they couldn't co-occur.
As far as I can extend my reading comprehension, it seems they can't be. From DSM 5:
B. Does not occur exclusively during the course of schizophrenia, a bipolar disorder or depressive disorder with psychotic features, another psychotic disorder, or autism spectrum disorder and is not attributable to the physiological effects of another medical condition.
This is also interesting and related to the thread, again from the diagnostic manual:
Differential Diagnosis
Other mental disorders with psychotic symptoms.
Schizoid personality disorder can be distinguished from delusional disorder, schizophrenia, and a bipolar or depressive dis order with psychotic features because these disorders are all characterized by a period of persistent psychotic symptoms (e.g., delusions and hallucinations). To give an additional diagnosis of schizoid personality disorder, the personality disorder must have been present before the onset of psychotic symptoms and must persist when the psychotic symptoms are in remission. When an individual has a persistent psychotic disorder (e.g., schizophrenia) that was preceded by schizoid personality disorder, schizoid personality disorder should also be recorded, followed by "premorbid" in parentheses.
Autism spectrum disorder.
There may be great difficulty differentiating individuals with schizoid personality disorder from those with milder forms of autism spectrum disorder, which may be differentiated by more severely impaired social interaction and stereotyped behaviors and interests.
Personality change due to another medical condition.
Schizoid personality disorder must be distinguished from personality change due to another medical condition, in which the traits that emerge are attributable to the effects of another medical condition on the central nervous system.
Substance use disorders.
Schizoid personality disorder must also be distinguished from symptoms that may develop in association with persistent substance use.
Other personality disorders and personality traits.
Other personality disorders may be confused with schizoid personality disorder because they have certain features in com mon. It is, therefore, important to distinguish among these disorders based on differences in their characteristic features. However, if an individual has personality features that meet criteria for one or more personality disorders in addition to schizoid personality dis order, all can be diagnosed. Although characteristics of social isolation and restricted af- fectivity are common to schizoid, schizotypal, and paranoid personality disorders, schizoid personality disorder can be distinguished from schizotypal personality disorder by the lack of cognitive and perceptual distortions and from paranoid personality disorder by the lack of suspiciousness and paranoid ideation. The social isolation of schizoid per sonality disorder can be distinguished from that of avoidant personality disorder, which is attributable to fear of being embarrassed or found inadequate and excessive anticipation of rejection. In contrast, people with schizoid personality disorder have a more pervasive detachment and limited desire for social intimacy. Individuals with obsessive-compulsive personality disorder may also show an apparent social detachment stemming from devo tion to work and discomfort with emotions, but they do have an underlying capacity for intimacy.
Individuals who are "loners" may display personality traits that might be considered schizoid. Only when these traits are inflexible and maladaptive and cause significant func tional impairment or subjective distress do they constitute schizoid personality disorder.