Drug abuse includes the use of illegal drugs—such as marijuana, methamphetamines, cocaine, heroin, or other "street drugs"—and the abuse of legal prescription and nonprescription drugs. Some people use drugs to get a "high" or to relieve stress and emotional problems.
Drugs like ecstasy (MDMA), ketamine, GHB, Rohypnol, and LSD, which are known as "club drugs," may be found at all-night dances, raves, trances, or clubs. The use of club drugs accounts for increasing numbers of drug overdoses and emergency room visits. Inhalants like nitrous oxide may also be used at these clubs. Drugs come in different forms and can be used in different ways. They can be smoked, snorted, inhaled, taken as pills, put in liquids or food, put in the rectum or the vagina, or injected with a needle. Teens and young adults may be at risk for becoming victims of sexual assault or violent behavior in situations where these drugs are used.
Some nonprescription medicines, such as cold medicines that have dextromethorphan as an ingredient, are being abused by teens and young adults as a way to get a "high." Glue, shoe polish, cleaning fluids, and aerosols, are common household products with ingredients that can also be used to get a "high."
In the United States and Canada, approximately 40% of adults will use an illegal drug at some time during their lives. This does not include the use of alcohol or prescription medicines. Many people abuse more than one illegal substance at a time.
Drug dependence or addiction occurs when you develop a physical or emotional "need" for a drug. You are unable to control your use of a drug despite the negative impact it has on your life. You may not be aware that you have become dependent on a drug until you try to stop taking it. Drug withdrawal can cause uncomfortable and sometimes dangerous symptoms. The usual treatment is to gradually reduce the dose of the drug until you can completely stop using it.