What Causes Mental Illness?
The current leading theory for the cause of the mental illness is the biopsychosocial model. The biopsychosocial model posits that mental illness comes about when accumulative biological, psychological, and social and environment causes collide. Dialectical Behaviour Therapy calls this phenomena “the perfect storm.”
For example, someone with an anxiety disorder may have biological factors such a a family history of anxiety, psychological factors such as low-esteem and an anxious or cautious temperament, and may have social environmental factors such as bullying in school.
The myriad of factors that contribute to mental illness helps explain why each individuals experience is so unique.