Impaired Control

- Substances used in larger amounts or for longer periods of time than intended

- Expresses desire to stop using substances, but reports an inability to do so

- Spends a great deal of time obtaining and using substances as well as recovering from

its effects

- Craves substances often

Social Impairment

- Recurrent substance use may result in a failure to fulfill major obligations at work,

school, or home

- Continued use of substances despite issues that are caused by or exacerbated by

substance use

- Important activities may be given up because of substance use

Risky Use

- Recurrent substance use in situations where it’s physically hazardous

- Continued use of substance despite knowledge that substances may be physiologically

or psychologically impairing

Tolerance and Withdrawal

- Tolerance:

- Markedly increased dose of the substance in order to get the same effect or

- Reduced effect when the usual dose in consumed

- Withdrawals:

- Includes a set of physiological symptoms a person experiences when drug use is

stopped or decreased

Physiological Dependence

- Researchers view tolerance and withdrawal as indicators for a physiological dependence

of a psychoactive substance