The different alcohol and drug abuse rehabilitation programs which are accessible to drug and alcohol addicted persons in Clarksville can vary in many various ways. Some drug and alcohol abuse rehab programs take place in a residential or inpatient setting, where clients reside for the duration of their rehab which provides a more therapeutic rehab setting. Others provide alcohol and drug abuse treatment services on an outpatient basis which provides a sense of versatility, though outpatient centers may not be an appropriate drug and alcohol abuse rehabilitation service for individuals in Clarksville who are struggling with long term drug or alcohol addiction difficulties. Whether or not inpatient or outpatient substance abuse treatment programs are chosen, there are varying amounts of time that people will be asked to stay in the drug and alcohol rehab program. For example, quite a few short-term programs provide programs for 30 days or less, while long-term facilities will call for at least a 3 month stay.