The various alcohol and drug abuse rehab programs which are accessible to drug addicted persons in Portsmouth can vary in a lot of various ways. Some substance abuse rehabilitation services take place in a residential or inpatient setting, where clientele remain the entire time they are in rehab which provides a more therapeutic rehab setting. Others offer alcohol and drug abuse rehabilitation services on an outpatient basis which provides a sense of versatility, although outpatient programs may not be an appropriate alcohol and drug abuse rehab service for people in Portsmouth who are struggling with long term drug addiction problems. Whether inpatient or outpatient alcohol and drug abuse rehab programs are selected, there are also different amounts of time that individuals will be required to remain in the drug and alcohol treatment facility. For instance, quite a few short-term programs offer services for 4 weeks or less, whereas long-term facilities will call for at least a 12 week stay.