What Is Central Sensitization? A Physical Therapist Explains.

Written By Steven Lisowe

If you are living with persistent pain that hasn’t improved, central sensitization may be part of the reason.

Many people are told their imaging is “normal,” yet their pain continues. This can feel confusing and discouraging. Understanding central sensitization often provides clarity — and direction.

As a physical therapist specializing in persistent pain, here is what you need to know.

What Is Central Sensitization?

Central sensitization describes a state of the nervous system, one that has become overly sensitive and amplifies pain signals.

Instead of responding only to tissue injury, the brain and spinal cord begin producing pain even when there is little or no ongoing damage.

Your body’s alarm system becomes stuck in a heightened state. The pain is real. But the driver is increased nervous system sensitivity, not necessarily structural damage.

How Does Central Sensitization Develop?

Pain is an output of the brain based on perceived threat.

Normally, tissue injury occurs along with an increased “danger signal” which results in pain. Once the tissues heal (most heal within 3 months), the sensitivity decreases and the pain goes away.

With central sensitization, “danger pathways” become more efficient at firing. The nervous system lowers its threshold for danger. What would normally be a non-threatening input (movement, touch, stress) now is perceived as danger, and triggers pain. Furthermore, symptoms may spread or become unpredictable. And, over time, the nervous system essentially “learns” pain.

It’s important to note that this does not mean pain is in your head. It means the nervous system has adapted in a protective way. And ironically, it’s doing what it was designed to do.

Common Signs of Central Sensitization

You may be experiencing central sensitization when:

  • Chronic pain lasts longer than 3 months

  • Pain spreads beyond the original injury

  • Light touch or pressure causes pain

  • Stress, poor sleep, and poor nutrition trigger pain flares

  • Imaging is “normal” or “age-appropriate” despite the pain

  • Pain moves around or is in multiple areas (neck, back, jaw, headaches, etc.)

Central sensitization is commonly associated with:

  • Chronic low back pain

  • Fibromyalgia

  • Migraines

  • Persistent neck pain

  • TMJ disorders

  • Post-injury pain that does not resolve

Why Standard Treatments May Not Work

When pain is primarily tissue-based, local treatments can help. When the nervous system is sensitized, however, focusing only on structure often misses the root cause.

Repeated passive treatments, injections, or aggressive therapy may not produce lasting results because the nervous system remains in a heightened state.

Persistent pain requires addressing the sensitivity of the system itself.

Can Central Sensitization Be Treated?

Yes.

The nervous system is adaptable. The same neuroplasticity that allowed pain sensitivity to increase also allows it to decrease.

Evidence-based treatment for central sensitization and chronic pain often includes:

  • Pain neuroscience education

  • Graded exposure to movement

  • Nervous system regulation strategies

  • Sleep improvement

  • Stress management

  • Progressive strength training

  • Mindfulness and mindful movements

  • Reducing fear of movement

The goal is not to ignore pain — it is to retrain the nervous system so it no longer overprotects.

With consistency, sensitivity decreases and function improves.

Many people experience significant improvement with targeted treatment.

The Bottom Line

If you are living with persistent pain and traditional treatments have not helped, central sensitization may be part of the explanation.

Understanding how the nervous system contributes to chronic pain is often the first step toward recovery.

If you would like help addressing persistent pain using a nervous system-informed approach, schedule a consultation to learn more.

Steven Lisowe