Drug addiction, also called substance use disorder, is a disease that affects a person's brain and behavior and results in an inability to control use of a legal or illegal drug or drug. Substances such as alcohol, marijuana, and nicotine are also considered drugs. When you're addicted, you may continue to use the drug despite the harm it causes.
Drug addiction can begin with experiential use of a drug for fun in special situations and for some people, and drug use becomes more frequent. For others, especially with opioids, drug addiction begins with exposure to prescription drugs or obtaining drugs from a friend or relative who has been prescribed the drug.
The risk of addiction and how quickly you become addicted varies depending on the drug. Some drugs, such as opioid painkillers, have a higher risk and become addictive more quickly than others.
Over time, you may need larger doses of the drug to reach orgasm. And soon you need the drug just to feel good. As your use of the drug increases, you may find it increasingly difficult to go without the drug. Attempts to stop using the drug may create a strong craving and make you physically ill (withdrawal symptoms).
You may need help from your doctor, family and friends, support groups, or a structured treatment program to overcome your drug addiction and continue drug-free.