People often equate rehabilitation with physical therapy. It’s something a patient does following an injury or a complicated surgery. Still others think of rehab as a treatment for alcoholism or drug addiction. A few years ago, a British soul singer had a hit single with the song “Rehab." The lyrics were about whether to check herself into substance dependence treatment or not. Rehabilitation can also be a form of vocational counseling. Injured workers re-learn how to go back to work in what’s called vocational rehabilitation.