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  1. Addiction: What It Is, Causes, Symptoms, Types & Treatment

    Addiction is a chronic condition that can affect many aspects of your life, including your physical and mental health, relationships and career. There are two main forms of addiction: substance use …

  2. Addiction - Wikipedia

    Addiction is a neuropsychological disorder characterized by a persistent and intense urge to use a drug or engage in a behavior that produces natural reward, despite substantial harm and other negative …

  3. What Is Addiction? Definition, Signs, Treatment, and More

    May 25, 2018 · Addiction can be substance or behavior related. Learn what causes an addiction and how treatment works.

  4. Understanding Drug Use and Addiction DrugFacts

    Jun 6, 2018 · Addiction is a chronic disease characterized by drug seeking and use that is compulsive, or difficult to control, despite harmful consequences.

  5. Addiction | Psychology Today

    A person with an addiction uses a substance, or engages in a behavior, for which the rewarding effects provide a compelling incentive to repeat the activity, despite detrimental consequences.

  6. Addiction - Harvard Health

    In its most basic definition, addiction is a physical dependence on a substance or activity. The dependence leads to unpleasant symptoms, called withdrawal symptoms, that appear when a …

  7. What is Addiction? | Definition, Causes, Symptoms, & Treatment

    Dec 22, 2025 · Addiction happens when a person cannot control their substance use, and they continue to use a drug or alcohol despite harmful consequences. Substance use disorders typically develop …