To ensure that drug and alcohol rehabilitation can be available to individuals with co-occurring psychological problems, Partial Hospitalization drug and alcohol rehabilitation programs in Somerville can offer rehabilitation in particular hospital and mental health clinic settings for clients who need rehab. Partial Hospitalization the name for this kind of drug and alcohol treatment program, due to the fact that the treatment client will undergo drug rehabilitation in the day and will then go home in the evening for about seven days per week. This is why these drug and alcohol rehab programs are also referred to as Day Treatment. Partial Hospitalization drug and alcohol treatment programs help clients deal with substance abuse problems and mental health problems at the same time so that treatment staff can ensure that the individual avoids relapse when drug and alcohol rehab is finished.