It is quite common for people who struggle with a mental health disorder to also struggle with a co-occurring alcohol and drug abuse issue. In fact, it is more prevalent than one would think and many individuals presently in alcohol and drug rehab facilities in Berkeley, California may have psychological issues which have just simply been undiagnosed. Rehabilitation experts at proven drug rehabilitation centers in Berkeley know how to spot persons with co-occurring mental health and alcohol and drug abuse issues in hopes that these two issues can be handled simultaneously while the individual is in treatment. Because both must be resolved, the client should not leave rehabilitation until they are psychologically stable, not just sober.