The various substance abuse rehab programs which are accessible to drug and alcohol addicted people in Portland, TN. can differ in many various ways. Some substance abuse treatment programs are conducted in a residential or inpatient location, where individuals reside for the duration of their rehabilitation which offers a more conducive treatment environment. Others offer substance abuse rehab services on an outpatient basis which allows for more versatility, though outpatient facilities are not always a suitable alcohol and drug abuse rehab service for people in Portland, TN. who are struggling with long term drug addiction issues. Whether inpatient or outpatient alcohol and drug abuse rehab services are chosen, there are also different lengths of time that men and women will be required to remain in the alcohol and drug rehabilitation program. For instance, some short-term programs provide services for a month or less, whereas long-term programs will require at least a 12 week stay.