Drug addiction, also called substance use disorder, is a disease that affects a person’s brain and behavior and leads to an inability to control the use of a legal or illegal drug or medicine. Substances such as alcohol, marijuana and nicotine also are considered drugs.
However, in terms of substance addictions, some of the more common types of addiction include:
- Alcohol addiction.
- Prescription drug addiction.
- Drug addiction.
- Heroin addiction.
Some of the common symptoms of drug abuse may include:
- Mood swings.
- Anxiety.
- Depression.
- Irritability.
- Euphoria.
- Periods of hyperactivity.
- Agitation.
- Trouble in interpersonal relationships.