Personality disorders, not mental illness, are a leading cause of increased rape cases according to psychiatrist Dr. S.D. Singh. A personality disorder involves abnormal sexual thoughts and behaviors rather than actual mental illness. Many child sex offenders have personality disorders where sexual fantasies are a major part of their thoughts, leading them to act on opportunities. They seek out children who can't resist or be threatened into silence. Prevention through social support and education on healthy relationships is needed to address the root causes like family dysfunction and lack of role models.