It is quite common for people who have problems with a mental health issue to also struggle with a co-occurring alcohol and drug abuse disorder. In fact, it is more common than one would think and a lot of people currently in drug and alcohol rehab programs in Calexico, California may have mental health issues which have just simply been undiagnosed. Rehabilitation experts at proven drug treatment facilities in Calexico know how to identify persons with co-occurring mental and alcohol and drug abuse disorders so that these two concerns can be simultaneously addressed while the individual is in treatment. Because both must be resolved, the client should not leave rehab until they are psychologically stable, not just sober.