It is quite common for men and women who have problems with a psychological disorder to also be plagued by a co-occurring alcohol and drug abuse disorder. In truth, it is more prevalent than one would assume and many people currently in drug rehab facilities in Campbell, California may have psychological issues which are often undiagnosed. Rehab experts at successful drug and alcohol rehabilitation programs in Campbell know how to identify persons with co-occurring psychological and drug and alcohol abuse disorders so that these two issues can be simultaneously addressed while the person is in rehab. Because both must be resolved, the individual must remain in treatment until they are mentally stable, not just abstinent.