The diverse substance abuse treatment programs which are offered to drug addicted persons in Palermo can vary in several different ways. Some substance abuse rehab programs are conducted in a residential or inpatient setting, where clientele remain the entire time they are in treatment which provides a more therapeutic rehabilitation environment. Others provide alcohol and drug abuse rehabilitation programs on an outpatient basis which provides a sense of flexibility, although outpatient programs may not be an appropriate substance abuse rehab program for people in Palermo who are having difficulties with serious drug addiction problems. Whether or not inpatient or outpatient drug and alcohol abuse rehab services are selected, there are also different lengths of time that people will be asked to stay in the alcohol and drug rehabilitation program. For example, many short-term programs offer programs for 30 days or less, while long-term programs will call for at least a 3 month stay.