Costochondritis: Evaluation and Management
Costochondritis is a clinical diagnosis made by physical examination demonstrating reproducible chest wall tenderness over the costochondral junctions, and in most cases requires no imaging whatsoever. 1
Diagnostic Approach
Clinical Diagnosis
The diagnosis is straightforward in most patients:
- Palpate the costochondral junctions (typically 3rd-7th ribs) and costosternal joints
- Reproducible tenderness at these sites confirms the diagnosis
- The condition accounts for approximately 42% of nontraumatic musculoskeletal chest wall pain 1
Risk Stratification for Cardiac Workup
Age and cardiac risk factors determine whether additional testing is needed:
- Children, adolescents, and young adults (<35 years): History and physical examination alone are sufficient 2
- Patients ≥35 years OR those with cardiac risk factors OR any cardiopulmonary symptoms: Obtain ECG and consider chest radiograph 2
- Important caveat: Coronary artery disease is present in 3-6% of adult patients with chest pain AND chest wall tenderness, so don't be falsely reassured by reproducible tenderness alone in higher-risk patients 2
Imaging Recommendations
Chest radiography may be useful as initial imaging only when evaluating for specific alternative diagnoses (rib fracture, infection, neoplasm, pneumothorax), but is insensitive for costochondral abnormalities 1
Advanced imaging (CT, MRI, bone scan) is NOT indicated for uncomplicated costochondritis 1. Reserve these for:
- Suspected infection (fever, purulent drainage, immunocompromised state)
- Concern for malignancy
- Failure to respond to appropriate treatment
- Atypical presentations requiring exclusion of other pathology
Critical pitfall: Always consider infectious costochondritis or underlying malignancy in patients with persistent symptoms, systemic signs, or atypical features. Ultrasound before injection can detect unexpected masses 3.
Management
First-Line Treatment
The standard approach is conservative management with:
- Acetaminophen or NSAIDs (where safe and appropriate) 2
- Activity modification: Avoid movements that reproduce pain or cause chest muscle overuse 2
- Reassurance: The condition is self-limited in most cases 2
Refractory Cases
For patients not responding to conservative measures:
Local corticosteroid injections provide symptomatic improvement in recalcitrant cases. In one study, all 13 patients treated with corticosteroid injections reported improvement 4
Stretching exercises show progressive significant pain reduction compared to controls (p<0.001) and can be a useful adjunct 5
Sulfasalazine may benefit patients with recurrent costochondritis: 10 of 11 patients with recurrent symptoms responded to this treatment 4
Prognosis and Follow-up
- Most cases are self-limited and benign 2
- At 1-year follow-up, approximately 55% of patients still report chest pain, but only one-third have definite persistent costochondritis 6
- Early rheumatological review in persistent cases significantly reduces repeat admissions and unnecessary investigations 4
Red Flags Requiring Further Investigation
- Fever or systemic symptoms (consider infectious costochondritis from organisms like Pseudomonas aeruginosa 7 or tuberculosis 8)
- Progressive swelling or mass
- Purulent drainage
- Failure to improve with appropriate conservative treatment
- Immunocompromised state or diabetes
Women and Hispanic patients have higher frequency of costochondritis presentation 6, though this doesn't change management.