[caymanjim]

Thanks for replying. I agree with what you've said, and agree that it's helpful to have a term for use that dramatically impacts a person's ability to function. "Use disorder" here does seem to be a reasonable, neutral term for differentiating between normal (or even heavy) use that doesn't cause significant problems and use (at any level) that does cause significant problems (physical, mental, financial, or social).

I have a knee-jerk reaction to calling problematic drug use a "disease". "Disorder", as you've described it, does seem like a reasonable term.

[euthymiclabs]

Agreed. This paper https://www.nejm.org/doi/10.1056/NEJMra1602872 (which isn't available open access, unfortunately) argues that the brain changes in substance use are more likely normal learning associated with very strong stimuli than actual disease processes. I find this to be a more helpful, optimistic, and accurate interpretation of the data than the disease model. (And it really complements the other evidence-based interventions for substance use disorders we have!)