Outpatient treatment gives treatment clients the ability to sustain certain responsibilities and aspects of their way of life while taking part in drug and alcohol rehabilitation services. Outpatient treatment is a moderate level of treatment, and should not be mistaken for the degree of rehab provided within an inpatient or residential rehab setting which can be much more extensive. Outpatient treatment might be suitable for someone who has a short history of drug or alcohol use for example, but will most surely not be adequate for somebody whose treatment needs exceed what outpatient treatment is prepared to offer. Individuals involved in drug and alcohol use often need a considerable change of environment, because many of the things which prompt their drug abuse are strictly environmental. As an example, if a person has been physically or psychologically abused and this is triggering their drug or alcohol use, there is no way for any rehab endeavours to achieve success if they return to such circumstances on a daily basis. In outpatient treatment, individuals can benefit from group and individual therapy, as well as family therapy services. In outpatient treatment, most centers offer services five to seven days each week on either a part-time or full time basis for four weeks or longer in some cases.