I think anorexia, or bulimia.
severe
Your mother has a severe mental disorder.
Severe case of Borderline Personality Disorder
The worst category for a disorder/disability would be profound.
It depends how mild it is.
For individuals with dysthymic disorder, the symptoms are so severe that they may not go out in public.
Severe Depression
I think anorexia, or bulimia.
Major depressive disorder is a moderate to severe episode of depression lasting two or more weeks.
Bipolar disorder is a chemical imbalance in the brain. The symptoms of bipolar disorder are characterized by changes of mood ranging from severe depression to a manic uncontrollable high. Acute stress disorder is the result of a psychological shock that stems from severe trauma.
Major depressive disorder is a moderate to severe episode of depression lasting two or more weeks.
Chaos can be defined as a state of severe confusion and disorder.