It is not uncommon for people who are afflicted with a psychological disorder to also have a co-occurring substance abuse issue. Frankly, it is more widespread than one would think and a lot of men and women presently in alcohol and drug rehabilitation centers in Grass Valley, CA. may have mental health issues which are often undiagnosed. Rehab experts at effective drug treatment facilities in Grass Valley, California know how to identify persons with co-occurring psychological and drug and alcohol abuse disorders so that both issues can be simultaneously addressed while the person is in rehabilitation. Due to the fact both must be resolved, the client must remain in treatment until they are psychologically stable, not just off of drubs.