What causes psychological disorders?
There is no single cause for mental illness. A number of factors can contribute to risk for mental illness, such as: Your genes and family history
Your life experiences, such as stress or a history of abuse, especially if they happen in childhood
Biological factors such as chemical imbalances in the brain
A traumatic brain injury
A mother’s exposure to viruses or toxic chemicals while pregnant
Use of alcohol or recreational drugs
Having a serious medical condition like cancer
Having few friends, and feeling lonely or isolated
Psychological disorders are not caused by character flaws. They have nothing to do with being lazy or weak.

How are Psychological disorders diagnosed?
The steps to getting a diagnosis include A medical history
A physical exam and possibly lab tests, if your provider thinks that other medical conditions could be causing your symptoms
A psychological evaluation. You will answer questions about your thinking, feelings, and behaviors.
What are the treatments for mental disorders?
Treatment depends on which mental disorder you have and how serious it is. You and your provider will work on a treatment plan just for you. It usually involves some type of therapy. You may also take medicines. Some people also need social support and education on managing their condition.