Rehabs are probably best know for dealing with two types of addiction, people who are addicted to alcohol, alcoholics, and people who are addicted to drugs, either prescribed or not. People who are addicted to both alcohol and drugs are commonly referred to as dual addicted.
Some rehabs have broadened their scope of what they say addiction means, and offer treatment for a wide variety of addictions, some of which are listed below.
The rehab will take an approach that the individual is what they call an addictive personality, and use the particular addiction as a trigger.
This approach has allowed some rehabs to broaden their scope of who they treat enormously, which has many implications from a business point of view, and has rasied many ethical questions about what addiction really is and what it means, and whether or not some rehabs exploit that.