It is not uncommon for men and women who struggle with a psychological disorder to also be plagued by a co-occurring drug and alcohol abuse issue. In fact, it is more prevalent than one would assume and many people currently in drug and alcohol rehabilitation centers in Chico, California may have psychological disorders which are often undiagnosed. Rehab experts at successful drug rehab programs in Chico know how to spot persons with co-occurring mental and alcohol and drug abuse issues in hopes that both issues can be handled simultaneously while the individual is in rehabilitation. Due to the fact both need to be addressed, the individual should not leave rehabilitation until they are psychologically stable, not just abstinent.