The Diverse Origins of Non-Cardiac Chest Pain
Chest pain can be an alarming symptom, but it is important to remember that the heart is not the only organ in the chest cavity. The esophagus, lungs, and the surrounding muscles, bones, and nerves can all cause pain that feels like a cardiac event. Non-cardiac chest pain (NCCP) is a common condition, with multiple potential causes ranging from relatively minor issues to serious but non-cardiac emergencies. Understanding the different sources of this pain can help in distinguishing it from heart-related conditions, although a medical evaluation is always the safest course.
Gastrointestinal Causes
Issues within the digestive system are a leading cause of non-cardiac chest pain. The esophagus, located near the heart, shares nerve pathways that can refer pain to the chest.
Gastroesophageal Reflux Disease (GERD)
This is perhaps the most common non-cardiac cause of chest pain. It occurs when stomach acid flows back into the esophagus, causing a burning sensation known as heartburn. This discomfort can radiate to the chest and mimic heart attack symptoms.
Esophageal Spasms
These are abnormal and often intense contractions of the muscles in the esophagus. The squeezing pain they cause can be mistaken for angina, the chest pain associated with heart disease.
Peptic Ulcers and Gastritis
Sores in the lining of the stomach or inflammation of the stomach lining (gastritis) can cause a gnawing or burning pain that may be felt in the chest, especially when the stomach is empty.
Gallstones and Pancreatitis
Problems with the gallbladder or inflammation of the pancreas can trigger abdominal pain that radiates to the chest. Pain from gallstones often worsens after a fatty meal.
Musculoskeletal Causes
Pain can originate from the bones, joints, and muscles in the chest wall, ribcage, or spine. This type of pain often intensifies with movement or when a specific area is pressed.
- Costochondritis: This is an inflammation of the cartilage that connects your ribs to your breastbone. It can cause sharp pain and is often tender to the touch.
- Muscle Strains: Strenuous activity or heavy lifting can strain the muscles between the ribs (intercostal muscles) or the pectoral muscles. Persistent coughing from a respiratory illness can also cause this strain.
- Rib Fractures: Trauma to the chest can cause a cracked or broken rib, leading to severe pain that worsens with breathing or coughing.
- Fibromyalgia: This chronic condition can cause widespread musculoskeletal pain, including in the chest area.
Pulmonary Causes
Conditions affecting the lungs can also be a source of chest pain. The lungs and their lining, the pleura, are located within the chest cavity, and inflammation or blockages can cause discomfort.
Pulmonary Embolism
This is a medical emergency involving a blood clot that travels to the lungs. It can cause acute, sharp chest pain and shortness of breath and must be ruled out immediately.
Pleurisy
An inflammation of the lining around the lungs, pleurisy causes a sharp pain that worsens with deep breathing or coughing.
Pneumonia and Pneumothorax
Pneumonia is a lung infection that can cause chest pain along with fever and coughing. A pneumothorax, or collapsed lung, causes sudden, sharp chest pain and difficulty breathing.
Psychological Causes
Anxiety and stress can manifest with intense physical symptoms, including chest pain that feels very real and alarming. This is often the result of the body's 'fight or flight' response.
Panic Attacks
During a panic attack, the body releases a surge of adrenaline, causing a rapid heart rate, chest tightness, and hyperventilation, which can all lead to chest pain.
Chronic Stress
Prolonged stress can cause muscle tension and increased blood pressure, contributing to persistent chest discomfort.
Comparison of Cardiac and Non-Cardiac Chest Pain
Since distinguishing between cardiac and non-cardiac chest pain can be difficult, a medical professional must perform an evaluation. The following table highlights some general distinctions, but should not replace a doctor's assessment.
Feature | Typical Non-Cardiac Chest Pain | Typical Cardiac Chest Pain (Angina/Heart Attack) |
---|---|---|
Sensation | Sharp, stabbing, burning, or specific localized pain | Heavy, squeezing, crushing pressure |
Location | Often localized to one area, can be tender to touch | Spreads from chest to arm, jaw, neck, or back |
Duration | Can be brief (seconds), come and go, or last for hours | Lasts more than a few minutes and may worsen |
Trigger | Can happen at rest, after eating, or during stress | Often triggered or worsened by physical exertion |
Associated Symptoms | Hyperventilation, tingling, dizziness | Sweating, shortness of breath, nausea, lightheadedness |
Relief | Sometimes responds to antacids or changing position | Resolves with rest or nitroglycerin (unreliable) |
Seeking Medical Evaluation
Because the consequences of misdiagnosing a cardiac event are so severe, all new or persistent chest pain should be evaluated by a healthcare provider. A doctor can use a range of diagnostic tools, including an EKG, blood tests, and imaging, to rule out heart-related issues. Once a cardiac cause is excluded, a treatment plan can be developed based on the specific non-cardiac diagnosis.
For more information on the evaluation process for non-cardiac chest pain, the American College of Gastroenterology provides resources for patients with NCCP.
Conclusion
Chest pain, while frightening, has a multitude of potential causes beyond the heart. Common culprits include gastrointestinal conditions like GERD and esophageal spasms, musculoskeletal problems such as costochondritis, and respiratory issues like pleurisy and pneumonia. Psychological factors, especially anxiety and panic attacks, are also frequent contributors. The key takeaway is that any unexplained or persistent chest pain warrants professional medical attention to ensure a proper diagnosis and rule out any life-threatening conditions. With a correct diagnosis, effective treatments can alleviate discomfort and address the root cause, providing peace of mind and improving overall health.