Why Everyday Sounds Feel Painfully Loud When You Have Chronic Pain

People with chronic back pain experience everyday sounds as substantially more intense and unpleasant than those without pain, according to new research from the University of Colorado Anschutz School of Medicine. The study, published in the Annals of Neurology, found that back pain sufferers reacted more strongly to annoying sounds than 84% of people without pain, suggesting chronic pain involves a broader sensory amplification in the brain rather than just a localized problem in the affected area.

What Does the Research Actually Show?

Researchers recruited 142 adults with chronic back pain and 51 healthy people without pain for the study. While undergoing MRI brain imaging, both groups received mechanical pressure on their bodies to simulate pain and were exposed to annoying sounds. Participants then rated how unpleasant the combined experience felt.

The differences in brain responses were striking. Brain scans revealed that chronic pain patients showed stronger activity in regions that process sound (the auditory cortex) and emotional sensations (the insula). At the same time, they showed lower activity in brain regions that normally help calm or regulate emotions, like the medial prefrontal cortex. This pattern suggests the brain isn't just hearing the sound—it's amplifying both the loudness and the emotional distress it causes.

"Our findings validate what many patients have been saying for years, that everyday sounds genuinely feel harsher and more intense. Their brains are responding differently, in regions that process both the loudness of sound and its emotional impact," said Yoni Ashar, PhD, Co-Director of the Pain Science Program at the Anschutz School of Medicine. "This tells us chronic back pain isn't just about the back. There's a broader sensory amplification happening in the brain, and that opens the door for treatments that can help turn that volume down".

How Can Pain Reprocessing Therapy Help?

The research team tested whether specific treatments could reduce the brain's heightened response to sound. Chronic pain patients were divided into three groups receiving different interventions:

• Pain Reprocessing Therapy (PRT): A mindfulness-based approach where patients learn to think differently about their pain to minimize its impact
• Placebo saline injection: A control treatment to measure the placebo effect
• Usual care: The standard pain management patients were already receiving

Pain Reprocessing Therapy proved most effective at reducing the heightened brain response to sound and increasing activity in brain regions involved in regulating unpleasant experiences. However, the researchers noted the effect was only minimal, suggesting this is an emerging area where more work is needed.

What Does This Mean for Chronic Pain Patients?

The findings add important evidence that chronic pain isn't simply a problem localized to the injured area. Instead, the brain plays a central role by amplifying a range of sensations—including sensory signals from the back, sounds, and likely other stimuli as well. This discovery could reshape how doctors approach chronic pain treatment by targeting the brain's amplification system rather than focusing solely on the original injury site.

The research also overlaps with findings from studies on fibromyalgia patients, who similarly show heightened reactions to painful stimuli. This suggests that sensory amplification may be a common feature across multiple chronic pain conditions, not unique to back pain.

What Questions Remain Unanswered?

While the research validates patient experiences, important questions remain about cause and effect. Does chronic pain cause sound hypersensitivity, or are people who are naturally more sensitive to sound more likely to develop chronic pain in the first place? Ashar and his research team plan further studies examining other senses beyond hearing—including light, smell, and taste—to determine whether chronic pain causes sensitivity to those stimuli and how brain regions respond to them.

Understanding these mechanisms could eventually lead to more targeted treatments that address the root cause of sensory amplification rather than just managing symptoms. For now, the research provides validation for what many chronic pain patients have long reported: their experience of the world around them genuinely is different, and that difference is measurable in the brain.