What distinguishes substance abuse from substance dependency?

Substance dependency is characterized by the occurrence of withdrawal symptoms when the substance is reduced or discontinued. This physiological response indicates that the person has developed a physical reliance on the substance, differentiating them from individuals who may abuse it without experiencing such symptoms. Those who are dependent on a substance will often require continuous use to avoid discomfort associated with withdrawal.

In contrast, substance abuse does not necessarily involve withdrawal symptoms and can manifest as using substances in a way that is harmful or problematic, without the physiological aspect of dependency. Therefore, the presence of withdrawal symptoms is a key distinguishing factor in understanding the difference between dependency and abuse, highlighting the more severe and complex nature of dependency.