Condition · Thoracic spine

Chronic upper back pain explained.

Pain between the shoulder blades that won't settle is rarely a single tight muscle. It is usually a combination of load, guarding, and a nervous system that has become quicker to sound the alarm.

Reviewed by The Karuna Labs clinical teamUpdated

What is chronic upper back pain?

Chronic upper back pain is pain in the thoracic spine — roughly between the base of the neck and the bottom of the rib cage — lasting 12 weeks or longer. It is less common than low back or neck pain, and less often linked to a clear structural cause. Most cases involve a mix of sustained muscular guarding, breathing pattern changes, and a nervous system that has become sensitised.

At a glance

Region
Thoracic spine — T1 to T12, between the neck and the lower back
Definition
Pain lasting 12 weeks or more
ICD-10
M54.6 (pain in thoracic spine)
Common descriptions
Burning between the shoulder blades, a band around the ribs, deep aching that worsens through the day
Frequently linked to
Prolonged static postures, stress and breath-holding, protective guarding after a neck or shoulder problem
Red flags
Band-like pain with leg weakness, fever, or a cancer history needs prompt assessment

Key takeaways

  • The thoracic spine is the most stable part of the spine — serious structural causes here are relatively uncommon.
  • 'Bad posture' is a weaker explanation than it is usually given credit for; static posture held for hours matters more than which posture it is.
  • Stress shows up in this region physically, through shallow breathing and continuous shoulder-girdle bracing.
  • Movement variety, breathing retraining, and graded loading do more here than repeatedly stretching a spot that hurts.

What causes chronic upper back pain?

The thoracic spine is braced by the rib cage, which makes it the most mechanically stable region of the spine. That stability means structural failures are less common than in the neck or low back — and it means persistent pain here usually has a different explanation.

  • Sustained static load. Hours held in one position — any position — fatigues postural muscles. The problem is duration and lack of variety more than the shape you hold.
  • Protective guarding. After a neck, shoulder, or rib problem, the surrounding muscles brace continuously. Guarding that outlasts its usefulness becomes its own pain source.
  • Breathing pattern changes. Stress and pain both promote shallow upper-chest breathing, which overworks the accessory breathing muscles that attach around the upper back and neck.
  • Referred pain. The neck, shoulder joint, and ribs all refer pain into this region. Where you feel it is not always where it comes from.
  • Sensitisation. As with any persistent pain, the alarm threshold drops and ordinary loads start registering as painful.

Less common but important causes

Vertebral compression fractures (especially with osteoporosis), inflammatory spinal conditions, shingles before the rash appears, and referred pain from the heart, lungs, gallbladder, or oesophagus can all present as upper back pain. These are the reason a first episode deserves a proper medical assessment.

Is posture really the cause of my upper back pain?

Less than the internet suggests. Studies looking for a relationship between measured spinal posture and the presence of pain find weak and inconsistent associations. Plenty of people with pronounced thoracic curves have no pain, and plenty of people with textbook alignment do.

What does hold up is that holding any single position for hours is uncomfortable, and that people in pain tend to move less and hold themselves more rigidly — which then hurts more.

The best posture is the next one. Variety beats alignment.

The practical version: change position often, take movement breaks, and build enough capacity in the region that sitting for a while is not a problem. Chasing a perfect posture usually adds vigilance without adding relief.

How is chronic upper back pain treated?

  1. Rule out the rest. A clinical assessment to exclude fracture, inflammatory disease, and referred visceral pain.
  2. Restore movement variety. Frequent position changes and full-range thoracic rotation and extension, done little and often rather than in one heroic session.
  3. Retrain breathing. Diaphragmatic breathing offloads the accessory muscles that overwork in this region, and it directly downregulates the stress response that keeps them switched on.
  4. Build capacity. Graded strengthening of the upper back, shoulder girdle, and trunk — so ordinary daily loads stop being at the edge of tolerance.
  5. Address sensitisation. Where pain has persisted for months, education and pain reprocessing approaches target the amplification itself.

Massage, manipulation, and dry needling can give short-term relief that makes movement easier. They work best as a door-opener for active treatment rather than as the treatment.

How Karuna can help

Where upper back pain has become chronic and movement has narrowed, Karuna's 12-week program addresses the pattern rather than the spot. VR embodiment training lets you perform rotation, reaching, and overhead movements in an environment where the brain's threat response is quieter, while weekly coaching handles pacing, flare-ups, sleep, and the stress loading that keeps this region braced.

It runs entirely from home, is drug-free, and includes physician oversight. See how it works.

Frequently asked questions

Why does my upper back hurt between the shoulder blades?

The interscapular region is a common site for referred pain and for sustained muscular guarding. Pain felt there can originate in the neck, the shoulder joint, a rib joint, or the thoracic spine itself.

When it has lasted months, the more useful question is usually not which structure but why the alarm has stayed on — guarding, low movement variety, and sensitisation typically all contribute.

Can stress cause upper back pain?

Yes, and the mechanism is physical rather than imagined. Stress promotes shallow upper-chest breathing and continuous shoulder-girdle bracing, both of which load exactly this region.

Stress also lowers pain thresholds directly by keeping the nervous system in a heightened protective state, so the same load registers as more painful.

When is upper back pain serious?

Seek prompt medical assessment for upper back pain accompanied by chest pain or breathlessness, fever, unexplained weight loss, a band-like squeezing sensation around the chest with leg weakness or walking difficulty, a history of cancer, or pain after significant trauma or in anyone with osteoporosis.

New severe upper back pain with chest symptoms should be treated as an emergency until a doctor has excluded cardiac and vascular causes.

What is the ICD-10 code for chronic upper back pain?

M54.6 covers pain in the thoracic spine. Where chronic pain syndrome is documented, G89.4 may be recorded alongside it.

Does stretching help chronic upper back pain?

Stretching often gives brief relief, which is worth having, but it rarely resolves chronic upper back pain on its own — the relief usually fades within the hour.

Combining mobility work with strengthening, breathing retraining, and more frequent position change produces more durable change than stretching alone.

Related guides.

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