The diverse substance abuse rehabilitation programs which are accessible to drug addicted persons in Somerville can differ in several different ways. Some alcohol and drug abuse rehabilitation services take place in a residential or inpatient facility, where clientele reside the entire time they are in rehabilitation which supplies a more therapeutic rehab environment. Others provide alcohol and drug abuse rehabilitation programs on an outpatient basis which allows for more flexibility, though outpatient facilities may not be a suitable drug and alcohol abuse rehab program for men and women in Somerville who are having difficulties with long term addiction difficulties. Whether inpatient or outpatient drug and alcohol abuse treatment programs are selected, there are varying lengths of time that individuals will be expected to remain in the drug and alcohol rehab program. For example, many short-term programs provide programs for a month or less, whereas long-term facilities will demand at least a 3 month stay.