It is quite common for people who have problems with a mental health disorder to also have a co-occurring substance abuse disorder. In truth, it is more common than one would imagine and quite a few people currently in drug rehab programs in Sherman, Texas may have mental health issues which are often undiagnosed. Rehabilitation specialists at proven alcohol and drug rehab programs in Sherman, Texas know how to spot persons with co-occurring psychological and substance abuse issues in hopes that these two concerns can be handled simultaneously while the person is in treatment. Because both need to be addressed, the client should not leave rehab until they are mentally stable, not just off of drubs.