**Core Concept**
Attention deficit hyperactivity disorder (ADHD) is a neurodevelopmental disorder characterized by symptoms of inattention, hyperactivity, and impulsivity. Treatment for ADHD often involves a combination of behavioral therapy and pharmacological interventions.

**Why the Correct Answer is Right**
The mainstay of ADHD pharmacotherapy involves medications that target the dopamine and norepinephrine systems in the brain. Stimulants like methylphenidate and amphetamines enhance dopamine and norepinephrine release, while non-stimulants like atomoxetine increase norepinephrine levels. Antidepressants like bupropion also have some efficacy in ADHD by increasing dopamine and norepinephrine levels.

**Why Each Wrong Option is Incorrect**
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**Clinical Pearl / High-Yield Fact**
It's essential to note that while these medications are used in ADHD, they have different mechanisms of action and side effect profiles. Stimulants are generally more effective but also carry a higher risk of abuse and addiction.

**Correct Answer:**
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