Drug addiction is a multidimensional disorder that affects an individual’s ability to resist the use of drugs, including both types of drugs, legal and illegal. Legal drugs include medication drugs, nicotine, alcohol, and marijuana, while illegal drugs consist of illegal substances like cocaine and heroin. Drug addiction starts with experimentation, and no definitive cure is available for the same. Many therapies and treatment methodologies recognize the issue and help people to overcome addiction. This can improve the quality of life to a certain extent.