The term addiction refers to a chronic, relapsing brain disorder characterized by compulsive drug-seeking behavior and use despite negative consequences. It is caused by a combination of genetic, environmental, and psychological factors that can lead to changes in the brain's reward system, making it difficult for individuals to resist cravings and avoid using drugs or engaging in certain behaviors. Addiction can affect people from all walks of life and can be treated through various methods such as counseling, therapy, support groups, medication-assisted treatment, and lifestyle changes.