Thirty days is considered "short-term rehabilitation," and anything longer is thought about "long-lasting rehabilitation." The only difference in between rehab lengths is that treatment is more extensive in short-term rehab since more treatment is being condensed into a much shorter time period. Unlike inpatient rehab, when you choose an outpatient program, each step of the rehab process is generally completed at a different facility.As soon as that's finished, the actual treatment can begin 90 days is generally a minimum, however lots of people continue seeing a therapist or participating in group treatment for several years. The longer you spend in rehab, the more expensive it will be. Nevertheless, those who have extreme dependencies might not receive all the help that they need in short-term rehab.