Substance use disorder is characterized by what behavior?

Substance use disorder is characterized primarily by compulsive drug use despite the presence of negative consequences. This means that individuals continue to use substances even when it leads to problems such as health issues, relationship difficulties, or legal troubles. This compulsion reflects a change in the brain's functioning, where the need to consume the substance overrides rational decision-making and the recognition of harmful effects.

Understanding this characteristic is crucial in identifying and diagnosing substance use disorders, as it distinguishes more serious levels of substance engagement from occasional or recreational use, which might not involve the same compulsive behavior or adverse outcomes observed in those with a disorder.