University of Tokyo Study Finds Significant Link Between ADHD Symptoms and Chronic Pain Severity

A new Japanese study finds that ADHD symptoms are significantly associated with more extreme chronic pain. Read how this research could change pain management.

By: AXL Media

Published: Apr 24, 2026, 9:01 AM EDT

Source: Information for this report was sourced from The Japan Times

Nationwide Analysis of Pain Center Patients

Researchers at the University of Tokyo have published a groundbreaking study indicating that ADHD symptoms significantly impact the intensity of chronic pain. The study, published on Thursday in the journal Scientific Reports, analyzed data from 958 patients currently receiving treatment at specialized multidisciplinary pain centers across Japan. The research team found a consistent correlation: patients exhibiting higher levels of ADHD symptoms were substantially more likely to report "extreme" pain levels compared to those without such symptoms.

Bridging Neurodivergence and Physical Wellness

Led by Satoshi Kasahara, a project clinical physician at the University of Tokyo Hospital, the team conducted this research with the support of a health ministry grant. The grant was specifically designated for the improvement of chronic-pain care systems in Japan, where millions of individuals suffer from long-term physical discomfort that often lacks a clear, singular physiological cause. The findings suggest that the neurological pathways associated with ADHD may play a role in how the brain processes or amplifies pain signals, suggesting a more complex relationship between mental and physical health than previously recognized.

Implications for Multidisciplinary Pain Care

Japan has established numerous specialized pain centers to provide coordinated care, yet many patients continue to experience severe symptoms that are resistant to traditional treatments. The University of Tokyo study highlights a potential gap in current diagnostic procedures. If neurodivergent symptoms are contributing to the severity of a patient's pain experience, standard physical therapies or analgesics may be insufficient. The researchers propose that addressing underlying ADHD symptoms through targeted interventions could serve as a vital component in easing the overall burden of chronic pain.