Drug abuse occurs when a person feels the need to use a drug repeatedly for various reasons. Drug addiction is said to be present when a person continues to abuse a drug after serious problems related to the drug use have occurred.
Drug abuse is a widespread problem that affects people from all socioeconomic levels. The symptoms of abuse and addiction differ slightly based upon the drug being taken. Drug abuse and addiction cause many health-related and social problems.
The exact reason why some people abuse and become addicted to drugs is not known. There appears to be a complex relationship between biological and environmental factors that leads to abuse and addiction.
A drug overdose or drug abuse can result from the misuse of prescription or over-the-counter medicines, illegal drugs, or alcohol. Commonly abused drugs are: