Final answer:
Drug abuse involves inappropriate substance use, while drug addiction is a compulsive behavior despite harmful consequences, both impacting brain function.
Explanation:
Drug abuse refers to any use of mind-altering substances or inappropriate medication use. Drug addiction is a chronic brain disease characterized by compulsive drug seeking and use despite harmful consequences, leading to changes in brain structure and function that persist over time.
Drug use can progress to abuse when it causes disruptions in daily life or relationships, while addiction usually involves loss of control over drug-taking behaviors and a compulsive need for the drug, often leading to severe consequences.
The transition from drug abuse to addiction varies among individuals and is influenced by factors such as genetics and environment.
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