It causes a person to take drugs repeatedly, despite the harm they cause. Repeated drug use can change the brain and lead to addiction. The brain changes from addiction can be lasting, so drug addiction is considered a relapsing disease. Drug addiction can start with experimental use of a recreational drug in social situations, and, for some people, the drug use becomes more frequent. For others, particularly with opioids, drug addiction begins when they take prescribed medicines or receive them from others who have prescriptions.The risk of addiction and how fast you become addicted varies by drug. Some drugs, such as opioid painkillers, have a higher risk and cause addiction more quickly than others.

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