Why does escalating drug use often lead to compulsive behavior despite diminishing euphoric effects in the reward circuitry?

💡 Explanation

The shift from pleasure-seeking to compulsive drug-seeking behavior occurs because dopamine release transitions from the nucleus accumbens (reward) to the dorsal striatum (habit formation). Therefore, habitual pathways drive drug-seeking, rather than the initial euphoric reward, thus compulsive behavior persists.

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