It is not uncommon for people who have problems with a psychological disorder to also be plagued by a co-occurring alcohol and drug abuse issue. In truth, it is more common than one would think and quite a few individuals currently in alcohol and drug rehabilitation facilities in Monrovia, California may have mental health issues which are often undiagnosed. Rehab professionals at proven drug and alcohol rehabilitation programs in Monrovia know how to spot individuals with co-occurring psychological and substance abuse issues in hopes that both concerns can be handled simultaneously while the person is in rehab. Simply because both need to be addressed, the client must remain in treatment until they are psychologically stable, not just sober.