It is not uncommon for individuals who struggle with a mental health disorder to also struggle with a co-occurring substance abuse disorder. In truth, it is more common than one would imagine and many individuals currently in drug and alcohol treatment centers in Olney, Illinois may have psychological disorders which are often undiagnosed. Rehab experts at proven drug rehabilitation programs in Olney, Illinois know how to identify individuals with co-occurring mental health and alcohol and drug abuse issues so that these two issues can be simultaneously addressed while the individual is in treatment. Simply because both need to be addressed, the client must remain in treatment until they are psychologically stable, not just abstinent.