CausesBy Mayo Clinic staff
The exact causes of schizoid personality disorder are unknown, although a combination of genetic and environmental factors — particularly in early childhood — are thought to contribute to development of all personality disorders.
If you have schizoid personality disorder, you may have had a parent who was cold or unresponsive to emotional needs. Or, you may have been hypersensitive or thin-skinned in early adolescence and had these needs treated with annoyance or scorn.
A family history — such as having a parent who has any of the disorders on the schizophrenic spectrum — also increases your chances of developing the disorder.
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