أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
Unknown. But Nowadays research reveals that Family history of Psychiatric problems is one of the factors of acquiring such. Environmental and social factors can also be a causes of mental illness. Chemical Imbalance in the body due to underlying causes could lead to mental illness also.
A mental illness is a condition that impacts a person's thinking, feeling or mood may affect and his or her ability to relate to others and function on a daily basis. Each person will have different experiences, even people with the same diagnosis. (Autism,Bipolar Disorder,Borderline Personality Disorder,Depression,Dissociative Disorders,Eating Disorders,Obsessive-Compulsive Disorder,Posttraumatic Stress Disorder,Schizoaffective Disorder,Schizophrenia and so on) Are you sure you are ready for real answers?! :)
sadness simple as that and nothing else