Intercostal Muscle Strain: Causes, Symptoms, and Treatment 

By Dr Ajay Shakya, BPT, MPT (specializing in neurological conditions) | Published: August 2026. The clinical content has been checked against peer-reviewed literature and current physiotherapy practice. See the References listed below.

Quick Summary: An intercostal muscle strain is an injury to the muscles between the ribs, usually caused by a direct blow, twisting movement, or overexertion, resulting in sharp pain during breathing, coughing, or trunk movement. Most cases are mild to moderate and heal within a few days to 8 weeks with rest, ice/heat therapy, and guided physiotherapy, though severe grade 3 tears can take 6–9 months to recover. Seek immediate medical attention if breathing becomes difficult, pain is severe or persistent, or the injury follows significant trauma.

1. What is an intercostal muscle strain?

Intercostal muscles are located between the ribs and play a vital role in chest expansion and breathing. When these muscles are injured or torn, it is called an intercostal muscle strain.

Strains are graded 1–3, with grade 1 being a mild injury involving a small number of muscle fibers and grade 3 being the most severe. Grade 3 involves a complete tear—swelling, significant bruising, severe pain with movement, a palpable bump or hematoma, and a range of motion limited by more than 50%, typically apparent soon after the injury.

2. Possible causes

• A direct or indirect blow to the ribcage, such as from a motor vehicle accident.
• A direct impact occurs during contact sports, such as football or hockey.
• Twisting the trunk or torso beyond its normal range of motion.
• Excessive twisting while lifting weights.
• Sudden rotational movements during sports, such as tennis or golf.
• Deep or forced torso twisting during yoga poses, dance, or exercise routines.
• Prolonged overhead activities, such as painting a ceiling.
• Forceful, repetitive movements, such as hitting a tennis ball.
• Overhead lifting of heavy objects above shoulder level.

Sudden increases in physical activity can lead to an intercostal strain. This is especially true for individuals with weak core muscles, poor posture, or a history of inactivity. 

3. Signs and symptoms

The signs and symptoms of an intercostal muscle strain depend on the underlying cause. However, because these muscles support the trunk and facilitate breathing, taking a deep breath or moving the torso typically triggers or worsens the pain. 

Symptoms may include:

• Sharp, acute pain in the ribs and upper back during inhalation.
• Sudden, severe pain following a direct blow to the chest or back.
• Worsening pain after repetitive motions, such as swimming, rowing, or swinging.
• Upper back pain secondary to localized muscle stiffness and tension.
• Intercostal muscle spasms or involuntary twitching along the ribcage.
• Localized tenderness upon palpation between the ribs.
• Exacerbation of pain during coughing, sneezing, or deep breathing.
• Thoracic muscle rigidity or guarding when bending or twisting the trunk.
• Shortness of breath or restricted range of motion in the upper torso.
• Visible bruising or an audible "pop" or "tearing" sensation in severe strains.

Clinical Pearl

When to rule out a cardiac cause: Chest pain accompanied by shortness of breath, sweating, dizziness, or pain radiating to the arm or jaw is a medical emergency and needs immediate evaluation — don't assume it's a muscle strain. Musculoskeletal chest pain is typically reproducible with palpation or movement, whereas cardiac pain usually is not.

4. Diagnosis 

Diagnosing an intercostal muscle strain primarily involves a physical examination to identify areas of local tenderness and movement restrictions. The healthcare provider will review your medical history—including recent injuries or athletic activity—and may perform a pulmonary assessment to rule out underlying lung or chest wall complications.

A healthcare provider may also suggest imaging tests. X-ray or CT is typically used first to rule out a rib fracture, while ultrasound or MRI can more directly assess soft-tissue muscle injury.

5. Management

Home management depends on symptom severity. If pain is mild to moderate and can be managed safely at home, recovery options include:

• Cold & Heat Therapy: Apply an ice pack for recent injuries (first 48–72 hours). Switch to heat therapy—such as a moist heating pad, hot water bottle, electric pad, or warm bath—if pain persists past the first week.

• Activity Modification: Rest and limit strenuous physical activity to allow the torn muscle fibers to heal.

• Pain Relief: Take over-the-counter anti-inflammatory or pain-relieving medications to manage pain and swelling.

• Chest Splinting: Hugging a pillow tightly against your chest or crossing your arms over your torso can help stabilize the ribcage and make deep breathing less painful. (Note: Severe or worsening shortness of breath requires immediate medical attention.)

In addition to home management, the healthcare provider or physician may advise you:

• Take muscle relaxants for severe pain and spasms and visit the physiotherapist.
• In select cases, a physician may recommend an intercostal injection of lidocaine and corticosteroids to relieve symptoms. This should only be done by a trained specialist, ideally with ultrasound or imaging guidance, as intercostal injections carry a small risk of pneumothorax (collapsed lung).

Physiotherapy treatment:

•  Physiotherapy incorporates various treatment modalities to alleviate pain and swelling, including soft-tissue release, therapeutic ultrasound, TENS therapy, and targeted breathing or stretching exercises. Specific rehabilitation movements may involve gentle side-bending, trunk rotation, and diaphragmatic breathing.

• Caution with Stretching: Do not perform stretching exercises without direct guidance from a physiotherapist or healthcare provider. If any stretch increases your pain, stop immediately to avoid worsening the muscle strain.
• Breathing Management: Pain can cause shallow breathing, increasing the risk of lung complications such as pneumonia. Deep diaphragmatic breathing exercises help maintain full lung expansion and prevent these risks.

6. Prognosis and Preventive Measures:

The recovery timeframe for an intercostal muscle strain depends on the severity of the injury. Mild strains typically resolve within a few days to two weeks. Moderate strains generally require 3 to 8 weeks, while severe strains or complete muscle tears demand a significantly longer recovery period.

The vast majority of mild-to-moderate strains heal completely without long-term complications, allowing patients to return to their normal activities.

Preventing Intercostal Strains:

• Warm up thoroughly: Always perform a proper warm-up and gentle stretches before engaging in strenuous physical activity.
• Pace your effort: Avoid sudden overexertion or unconditioned torso twisting during sports and exercise.
• Build core strength: Maintaining strong trunk, core, and back muscles helps stabilize the ribcage and protects against future injury.

7. When to see a Doctor

When to see a doctor depends on the severity of the strain. Mild strains usually cause low-grade pain and swelling that resolve within a few days with home care.

Schedule a Medical Appointment If:

• Pain is severe, lasts longer than a week, or fails to improve with home management.
• Pain interferes with sleep or basic daily activities.
• You suspect a bruised or broken rib.

Seek Immediate Emergency Care If:

• The injury resulted from major trauma, such as a high-impact fall or motor vehicle accident.
• You experience severe difficulty breathing or shortness of breath.
• You cough up blood or produce yellow or green mucus.
• You develop a high fever, chills, or systemic illness.

8. FAQs

Q1. How long does it take for a strained intercostal muscle to heal?

Recovery from an intercostal muscle strain depends on the severity of the injury, typically ranging from a few days to 8 weeks for most mild-to-moderate cases.

Recovery Timeline by Injury Grade:

• Grade 1 (Mild): Typically heals in 1 to 3 weeks with conservative care.
• Grade 2 (Moderate): Takes approximately 3 to 8 weeks of rest and progressive rehabilitation.
• Grade 3 (Severe): Severe strains or complete muscle tears require 6 to 9 months to recover and may warrant surgical evaluation.

Q2. How do you know if you pulled an intercostal muscle?

Symptoms of an intercostal muscle strain include sharp chest pain, localized tenderness, and difficulty breathing. This pain typically worsens or sharpens with deep breaths, coughing, sneezing, or torso movement.

Q3. How do you fix an intercostal muscle strain?

Care for an intercostal muscle strain involves rest, ice, heat therapy, and over-the-counter pain relief. Mild-to-moderate strains typically recover within 1 to 8 weeks with conservative home care.

Q4. What can be mistaken for an intercostal muscle strain?

Several conditions cause similar chest wall or thoracic pain and may be confused with an intercostal muscle strain:

• Rib fracture or bruised ribs
• Clavicle (collarbone) fracture
• Pectoral muscle strain
• Pleurisy (inflammation of the lung lining)
• Cardiac issues (such as angina or heart attack)
• Sternoclavicular joint injury
• Costochondritis (inflammation of rib cartilage)
• Slipping rib syndrome

Q5. What is the best sleeping position for a pulled intercostal muscle?

Sleeping with a strained intercostal muscle is tricky because every breath moves the rib cage. Many patients find a semi-reclined position most comfortable, propped at a 30–45-degree angle to reduce chest expansion during breathing. Side-sleeping preference varies by individual — some find that lying on the affected side limits movement and eases pain, though this isn't universal, and others do better avoiding pressure on the injured side entirely. It's worth testing carefully and adjusting based on your own pain response rather than following a single fixed rule. Avoid sleeping flat on your back without support, and avoid the unaffected side, since that position stretches the injured intercostals with every breath.

A few practical additions: a pillow hugged against the chest adds gentle compression and support when changing positions or coughing, and keeping the room warm helps prevent muscle guarding and stiffness overnight.

Q6. How to speed up muscle strain recovery?

Recovery speed depends on the healing timeline while staying appropriately active—complete rest and overdoing it are both counterproductive. The general approach is as follows:

• First 48- 72 hours: Relative rest with the POLICE principle (Protection, Optimal Loading, Ice, Compression, Elevation) rather than strict RICE. Ice for 15-20 minutes every 2-3 hours reduces swelling and pain. 
• Gentle movement early: Complete immobilization delays healing and causes deconditioning. Light, pain-free movement within a tolerable range keeps circulation going and prevents excessive scar tissue formation. 
• Heat after the acute phase: Once swelling settles (usually 48- 72 hours), switching to heat improves blood flow and relaxes surrounding muscle guarding. 
• Progressive loading: Gradual reintroduction of stretching, then strengthening, guided by pain response — this is where a physiotherapist's supervision can genuinely accelerate recovery and prevent re-injury.
• Nutrition and sleep: Adequate protein intake and quality sleep support tissue repair; both are often overlooked.
• Avoid re-injury triggers: Returning to full activity too early is the most common reason strains become recurring problems.  

Read more: 

• Thoracic Spine 
• Chest Pain Right Side 
• Chest Muscle Strain 
• Upper Thoracic Pain Causes Symptoms Exercises 

References

1. Gundersen A, Borgstrom H, McInnis KC. Trunk Injuries in Athletes. Curr Sports Med Rep. 2021;20(3):150-156. PMID: 33655996

2. Gregory PL, Biswas AC, Batt ME. Musculoskeletal problems of the chest wall in athletes. Sports Med. 2002;32(4):235-250. PMID: 11929353

3. Rumball JS, Lebrun CM, Di Ciacca SR, Orlando K. Rowing injuries. Sports Med. 2005;35(6):537-555. PMID: 15974636

4. Nealon ARJ, Kountouris A, et al. Side strain in sport: a narrative review of pathomechanics, diagnosis, imaging, and management for the clinician. J Sci Med Sport. 2017;20(3):261-266. PMID: 27616432

5. Yokoyama Y, Kodesho T, Kato T, Nakao G, Saito Y, Taniguchi K. Effect of chest mobilization on intercostal muscle stiffness. Curr Res Physiol. 2022;5:429-435. PMC9713255

6. Baker BA. An Old Problem: Aging and Skeletal-Muscle-Strain Injury. J Sport Rehabil. 2017;26(2):180-188. PMID: 28095141

7. Complex strain injury involving an intercostal hematoma in a professional baseball player. Case report. PMID: 18614893

Medical disclaimer 

This article is for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider or physiotherapist regarding any medical condition.

DR

Ajay Shakya

BPT, MPT (Neurological Conditions) · 10+ years of experience

Certified physiotherapist and manual therapist with over 10 years of clinical experience. Specializes in neurological rehabilitation, back pain, neck pain, and sports injuries.

BPT Graduation MPT Neurological Certified Manual Therapist

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