The chest pain that is not from the heart

Few sensations cause as much anguish as chest pain. The patient arrives at the emergency room convinced of having a heart attack — and after normal electrocardiogram, troponin, and X-ray, receives the news: "It is not the heart." The relief is immense, but the pain continues. It worsens with deep breathing, with coughing, with twisting the trunk. Pressing the sternum with a finger reproduces the pain exactly. This presentation has a name: costochondritis — inflammation of the joints that connect the ribs to the sternum.

Costochondritis is responsible for a significant share of emergency room visits for musculoskeletal chest pain — but the diagnosis should only be confirmed after careful exclusion of serious causes such as acute coronary syndrome, pulmonary embolism, pneumothorax, and pneumonia by the responsible physician. It is benign, but can be intensely painful and last weeks or months when not adequately addressed. The myofascial component — trigger points in the intercostal muscles and pectoralis major — frequently perpetuates the condition even after the joint inflammation resolves. Medical acupuncture can act both on the sternocostal inflammation and on the muscular trigger points, offering a useful approach for this frequently underdiagnosed condition.

How sternocostal pain arises

  1. Sternocostal joint microtrauma

    Prolonged cough, intense exercise (push-ups, bench press), kyphotic posture, or repetitive mechanical stress generate microtrauma in the joints that connect the costal cartilages to the sternum. This triggers a local inflammatory response with pain and tenderness.

  2. Intercostal spasm

    Joint pain provokes reflex spasm in the adjacent intercostal muscles, which contract to protect the region. This spasm limits chest expansion and makes deep breathing painful — perpetuating the pain-spasm-pain cycle.

  3. Trigger points in the pectoralis major

    The pectoralis major, which inserts on the costal cartilage and the sternum, develops trigger points that refer pain to the sternocostal region, amplifying pain perception. These trigger points frequently go unnoticed because referred pain overlaps with joint pain.

  4. Sensitization and chronification

    Prolonged joint inflammation and muscular trigger points generate peripheral and central sensitization — the pain threshold drops, and normal stimuli such as breathing or coughing are interpreted as painful. Without treatment of the myofascial component, pain becomes chronic.

Costochondritis in numbers

13–36%
OF ER CHEST PAIN
are of musculoskeletal origin, with costochondritis being the most frequent cause in this group — data from emergency services
70%
IN WOMEN
costochondritis is more prevalent in women, especially between 20 and 40 years, possibly due to greater elasticity of the chest wall
2nd–5th
MOST AFFECTED JOINTS
the sternocostal joints from the 2nd to 5th rib are the most affected, frequently bilaterally
4–8
ACUPUNCTURE SESSIONS
are typically sufficient for resolution of pain when combined with postural correction and treatment of associated trigger points

Recognizing costochondritis

Critérios clínicos
08 itens

Clinical pattern of sternocostal pain

  1. 01

    Pain in the sternal region reproducible with direct palpation

  2. 02

    Worsening pain with deep breathing, coughing, or sneezing

  3. 03

    Pain when twisting the trunk or moving the arms

  4. 04

    Involvement of multiple sternocostal joints (2nd to 5th ribs)

  5. 05

    Pain that may radiate to the lateral chest wall

  6. 06

    Onset after intense coughing episode, exercise, or stress

  7. 07

    Painful pectoralis major on palpation with trigger points

  8. 08

    Normal cardiac and pulmonary tests

Myths about musculoskeletal chest pain

Myth vs. Fact

MYTH

If pain worsens with movement, it cannot be cardiac

FACT

Anginal pain classically does not relate to movement, but no isolated symptom rules out a heart attack. Reproducibility with palpation is the most specific finding for musculoskeletal origin. Initial medical assessment must always rule out cardiac and pulmonary causes before concluding that pain is of sternocostal origin.

MYTH

Costochondritis goes away on its own in a few days

FACT

Although benign, costochondritis can last weeks or months when the myofascial component is not treated. Trigger points in the intercostals and pectoralis major perpetuate pain even after the joint inflammation resolves. Active treatment with medical acupuncture and correction of perpetuating factors significantly accelerates resolution.

MYTH

Anti-inflammatories are sufficient for costochondritis

FACT

Anti-inflammatories reduce joint inflammation, but do not treat the muscular trigger points that frequently coexist. In chronic cases, the original inflammation has already resolved and pain is maintained by the myofascial component — in this scenario, anti-inflammatories have limited effect and dry needling of the trigger points is the most direct approach.

The maneuver that distinguishes the pain

Treatment protocol

Exclusion of serious causes
1st visit

Confirmation that cardiac and pulmonary causes have been adequately excluded. Palpation of the sternocostal joints to reproduce pain. Assessment of trigger points in the intercostals, pectoralis major, and subscapularis. Identification of perpetuating factors (posture, chronic cough, exercise).

Acupuncture in the sternocostal joints
Sessions 1–3

Superficial periarticular needling in the affected sternocostal joints — oblique tangential technique to avoid pneumothorax. 2 Hz electroacupuncture at intercostal points for pain modulation. Dry needling of the pectoralis major when active trigger points are identified.

Expanded myofascial treatment
Sessions 3–6

Dry needling of the intercostals and subscapularis for the posterior referred pain component. Treatment of trigger points in the serratus anterior when lateral pain is present. Chest cage release techniques with respiratory exercises.

Postural correction and prevention
Sessions 6–8

Ergonomic guidance to reduce thoracic kyphosis. Stretching program for the pectorals and strengthening of scapular retractors. Gradual return to exercises that compress the sternum (bench press, push-ups) with adequate technique.

Clinical pearl: cough as a trigger

Frequently asked questions

FREQUENTLY ASKED QUESTIONS · 03

Frequently Asked Questions

The most specific characteristic of costochondritis is reproducibility with direct palpation — if pressing the sternum or the sternocostal joints exactly reproduces your pain, this strongly suggests musculoskeletal origin. However, no isolated finding rules out a cardiac cause. If the chest pain is new, intense, or accompanied by shortness of breath, radiation to arm or jaw, seek urgent medical care.

The chest requires specialized technique due to proximity to the lung. The medical acupuncturist uses oblique and tangential insertion techniques in the intercostal regions, with controlled depth. Periarticular sternocostal acupuncture is performed over bony structure (sternum and costal cartilage), with minimal risk when performed by a physician trained in chest anatomy.

Yes, especially if perpetuating factors are not corrected: kyphotic posture, exercises with sternal compression without adequate technique, or untreated chronic cough. Strengthening the scapular retractors and maintaining good thoracic posture significantly reduce the risk of recurrence.