It is quite common for men and women who struggle with a psychological issue to also struggle with a co-occurring drug and alcohol abuse disorder. In truth, it is more widespread than one would think and quite a few people currently in alcohol and drug rehab facilities in Petaluma, CA. may have mental health issues which are often undiagnosed. Rehab professionals at effective alcohol and drug rehabilitation programs in Petaluma, California know how to identify individuals with co-occurring mental and substance abuse issues so that both concerns can be simultaneously addressed while the person is in rehab. Due to the fact both must be resolved, the individual should not leave treatment until they are mentally stable, not just abstinent.