How do clinicians differentiate ADHD rumination from anxiety rumination?

This is a great question, because the two can look very similar from the inside, but they usually have different drivers. ADHD rumination is more about attention getting stuck. The thoughts often loop because the brain has trouble disengaging once it’s locked onto something. It can happen around neutral or small issues, feels repetitive or circular, and isn’t always driven by fear. People often say it feels mentally noisy or sticky rather than threatening, and it may improve when attention is redirected or stimulation changes. Anxiety rumination is more fear-based. The thoughts are usually future-oriented and focused on risk, safety, or “what if” scenarios. There’s often a sense of urgency or dread, and the looping is driven by a desire to prevent something bad from happening. Anxiety rumination tends to come with physical symptoms like tension, restlessness, or a racing heart. Clinically, I pay attention to what helps. If distraction, movement, or shifting tasks reliably breaks the loop, ADHD is often a major factor. If reassurance, certainty, or avoidance temporarily reduces the rumination, anxiety is usually playing a bigger role. Timing and triggers matter too. ADHD rumination often shows up when there’s low structure, fatigue, or too many options. Anxiety rumination is more tied to perceived threats or uncertainty. Many adults have both, and they can feed into each other. Sorting them out isn’t about labeling one as “worse,” but about choosing the right tools. Attention-based strategies help ADHD rumination. Anxiety-based strategies help anxiety rumination. Knowing which is driving the spiral makes treatment much more effective.