It is not uncommon for people who are afflicted with a psychological issue to also be plagued by a co-occurring substance abuse issue. In truth, it is more widespread than one would imagine and quite a few men and women presently in alcohol and drug rehabilitation programs in Tremont, Illinois may have mental health issues which are often undiagnosed. Treatment professionals at successful drug and alcohol treatment centers in Tremont, Illinois know how to identify persons with co-occurring mental health and drug and alcohol abuse disorders so that both concerns can be handled simultaneously while the person is in rehabilitation. Because both must be resolved, the client must remain in rehabilitation until they are mentally stable, not just abstinent.