Substance-use and addictive disorders are marked by physiological dependence, drug-seeking behavior, tolerance, and/or withdrawal.
Addictive disorders, such as substance abuse and dependence, are common disorders that involve the overuse of alcohol or drugs. Addiction develops over time and is a chronic and relapsing illness.
The new-age addictive disorders like Gambling, Internet/Porn/Phone addiction are included in this category
There are three different terms used to define substance-related addictive disorders: