It is not uncommon for men and women who are afflicted with a psychological issue to also be plagued by a co-occurring drug and alcohol abuse disorder. In truth, it is more widespread than one would assume and a lot of people presently in alcohol and drug treatment programs in Diamond Bar, California may have psychological disorders which are often undiagnosed. Rehabilitation experts at proven drug rehab programs in Diamond Bar know how to spot persons with co-occurring psychological and alcohol and drug abuse issues in hopes that these two issues can be simultaneously addressed while the person is in rehab. Because both must be resolved, the person should not leave rehab until they are mentally stable, not just off of drubs.