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By Mayo Clinic staffPersonality development is affected by genetic tendencies as well as environmental factors, particularly during childhood. Factors that increase the risk of developing schizoid personality disorder include:
- Having a parent or other relative who has schizoid personality disorder, schizotypal personality disorder or schizophrenia
- Experiencing a childhood environment of neglect or scorn
- Suffering child abuse or mistreatment
- Having an emotionally detached parent
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