It is not uncommon for individuals who struggle with a mental health disorder to also be plagued by a co-occurring substance abuse disorder. Frankly, it is more common than one would think and a lot of people currently in drug and alcohol rehabilitation facilities in Santa Cruz, California may have mental health issues which are often undiagnosed. Rehab professionals at proven drug rehabilitation programs in Santa Cruz know how to spot persons with co-occurring psychological and drug and alcohol abuse disorders so that these two concerns can be simultaneously addressed while the person is in rehabilitation. Because both must be resolved, the person should not leave rehab until they are psychologically stable, not just abstinent.