It is quite common for people who are afflicted with a mental health issue to also struggle with a co-occurring substance abuse issue. In truth, it is more common than one would assume and a lot of people presently in drug treatment facilities in Greenwich, New York may have psychological disorders which are often undiagnosed. Rehab specialists at proven alcohol and drug treatment centers in Greenwich, New York know how to identify persons with co-occurring mental and alcohol and drug abuse issues so that these two issues can be simultaneously addressed while the person is in rehab. Simply because both must be resolved, the individual should not leave rehabilitation until they are psychologically stable, not just sober.