Drug addiction is an uncontrollable compulsion to repeat a behavior that is regardless of its negative consequences. A person who gets addicted to drug is called an addict. There are three types of drug addiction:

• Physical dependence – physical dependency addiction refers to appearance of a special withdrawal symptom that occurs when the drug is suddenly discontinued. Drugs like benzodiazepines; opioids, barbiturates, alcohol, anti-depressants, cortisones and beta-blockers are examples for causing physical dependency.
• Psychological addictions – show dependency of mind and social dysfunctions that lead to psychological withdrawal symptoms.
• Eating disorders – sometimes these are also considered to be psychological disorders and are treated as elements of addictive behavior. It happens with items like chocolate, caffeine, and sugar and makes the sufferers experience elements of addictive behavior.

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