In an effort to make drug and alcohol treatment can be available to persons with co-occurring psychological disorders, Partial Hospitalization drug rehabilitation facilities in Irvine, California can offer treatment in special hospital and mental health clinic facilities for those who need rehab. Partial Hospitalization is the term used for this type of drug and alcohol rehab program, because the person takes part in drug and alcohol rehabilitation in the day and returns home at night up to seven days a week. For this reason these drug treatment programs are also referred to as Day Treatment. Partial Hospitalization drug treatment facilities help clients deal with drug and alcohol addiction disorders and psychological problems concurrently so that treatment staff can make certain that the treatment client won't relapse once drug and alcohol treatment is complete.