It’s estimated that up to 50% of patients with whiplash-associated disorders (WAD) continue to experience symptoms one year after their injury. Common chronic WAD symptoms include persistent neck pain and stiffness, headaches, shoulder and upper back pain, arm pain or numbness and tingling, dizziness or balance issues, fatigue and sleep disturbance, cognitive difficulties, and increased pain sensitivity.

Because of the significant toll chronic WAD can have on individuals, families, and society as a whole, there has been substantial research aimed at better understanding these injuries in hopes of preventing long-term pain and disability. In particular, the view is beginning to shift from WAD being the result of simple soft tissue injury to a more complex condition involving the nervous system, where ongoing inflammation in and around neural tissues may continue to drive pain long after the initial injury.

The sudden acceleration and deceleration of the head and neck that characterizes whiplash can place rapid strain on cervical tissues, including the joints, muscles, ligaments, and tendons. In response, the body initiates an inflammatory process, releasing chemical messengers that help coordinate healing. These inflammatory signals can also affect nearby nerves, increasing their sensitivity and altering how they transmit signals.

In the short term, this response is normal and part of recovery. However, if the condition is not effectively managed, this heightened state can persist. Ongoing irritation of the nervous system may amplify pain signaling and contribute to increased sensitivity over time, a process known as central sensitization. As a result, stimuli that would not normally be painful may begin to produce pain, and symptoms can persist even after the original injury has largely healed.

Patients with signs of sensitization often require a more comprehensive treatment approach—one that addresses both the physical tissues and the nervous system. Care may include manual therapies and therapeutic modalities, targeted exercises and a gradual return to normal activity, and patient education to support positive recovery expectations. In some cases, additional strategies aimed at reducing inflammation, such as dietary considerations, may also be included as part of a broader, individualized plan.