The diverse drug and alcohol abuse rehabilitation programs which are offered to drug addicted people in Dorchester can differ in several different ways. Some substance abuse rehabilitation services are conducted in a residential or inpatient location, where individuals remain the entire time they are in rehabilitation which supplies a more therapeutic rehab environment. Others offer drug and alcohol abuse rehabilitation services on an outpatient basis which allows for more versatility, though outpatient centers are not always an appropriate drug and alcohol abuse rehabilitation service for individuals in Dorchester who are struggling with serious drug or alcohol addiction issues. Regardless of whether inpatient or outpatient drug and alcohol abuse treatment programs are selected, there are also different amounts of time that individuals will be required to continue to be in the drug and alcohol treatment facility. For example, many short-term programs provide services for a month or less, whereas long-term facilities will require at least a 90 day stay.