It is quite common for individuals who have problems with a psychological disorder to also struggle with a co-occurring drug and alcohol abuse issue. In truth, it is more common than one would think and quite a few individuals currently in drug rehabilitation centers in Portland may have mental health issues which are often undiagnosed. Rehab specialists at successful drug and alcohol rehabilitation programs in Portland know how to spot individuals with co-occurring psychological and substance abuse disorders in hopes that both concerns can be handled simultaneously while the individual is in treatment. Simply because both must be resolved, the individual should not leave rehabilitation until they are psychologically stable, not just abstinent.