The diverse alcohol and drug abuse treatment programs which are available to drug and alcohol addicted persons in Dunn Loring, VA. can differ in many various ways. Quite a few substance abuse rehab programs are conducted in a residential or inpatient location, where clients remain the entire time they are in rehab which offers a more conducive rehabilitation environment. Others offer alcohol and drug abuse rehab services on an outpatient basis which provides a sense of flexibility, though outpatient programs are not always an appropriate alcohol and drug abuse rehabilitation program for men and women in Dunn Loring, VA. who are having difficulties with serious drug or alcohol addiction problems. Whether or not inpatient or outpatient drug and alcohol abuse rehab programs are selected, there are varying amounts of time that people will be expected to stay in the drug rehab program. For example, quite a few short-term programs offer programs for 4 weeks or less, while long-term facilities will require at least a 90 day stay.