Causes of non-cardiac chest pain
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Common Causes of Non-Cardiac Chest Pain
Non-cardiac chest pain (NCCP) is chest pain that is not caused by heart disease, even though it can feel similar to angina. The most common cause of NCCP is gastroesophageal reflux disease (GERD), which is responsible for about 50-60% of cases. Other esophageal problems, such as esophageal motility disorders (like nutcracker/jackhammer esophagus, diffuse esophageal spasm, or achalasia), and conditions like infectious esophagitis, drug-induced ulcers, rings, webs, and eosinophilic esophagitis, also contribute to NCCP, though less frequently Mikhail2018Fass2006Frieling2018+2 MORE.
Gastrointestinal and Esophageal Disorders
GERD is the leading gastrointestinal cause of NCCP. Patients often report symptoms such as acid regurgitation, cough, difficulty swallowing, and bloating. Esophageal motility disorders and visceral hypersensitivity (increased sensitivity of the esophagus to pain) are also recognized contributors, especially in cases not related to GERD Mikhail2018Fass2006Frieling2018+2 MORE. Diagnostic tests like upper endoscopy, esophageal pH monitoring, and manometry are commonly used to identify these causes .
Respiratory and Airway Diseases
Obstructive airway diseases, such as asthma and chronic obstructive pulmonary disease (COPD), are also associated with NCCP. Environmental exposures, such as particulate matter, can increase the risk of both GERD and airway diseases, which in turn can lead to NCCP Mikhail2018Chambers1999.
Psychiatric and Psychological Factors
Psychiatric disorders are found in a significant number of NCCP patients. Conditions such as panic disorder, major depression, and health anxiety are common and may overlap with other causes. About 60% of patients with NCCP have evidence of a psychiatric disorder, and many have more than one contributing factor (esophageal, respiratory, or psychiatric) .
Neurological and Musculoskeletal Causes
Neurological conditions, including migraine, epilepsy, and multiple sclerosis, can present with chest pain as a symptom. Cervical angina, which originates from the cervical spine or spinal cord, is another under-recognized cause of NCCP. This type of pain may be triggered by neck movement or radiate to the arm, especially in patients with a history of cervical spine disease Harada2023Khan2021.
Other and Rare Causes
Other rare causes of NCCP include medication side effects (such as from mepolizumab, a drug used for asthma), and life-threatening conditions like aortic dissection, pulmonary embolism, tension pneumothorax, and esophageal rupture, which must be ruled out in acute settings Kienzl2012Korbitz2019. However, most cases of NCCP are benign and not life-threatening .
Conclusion
Non-cardiac chest pain is a common and complex condition with multiple possible causes. The most frequent are gastrointestinal (especially GERD), respiratory, psychiatric, neurological, and musculoskeletal disorders. A careful and multidisciplinary approach is needed to identify the underlying cause, as many patients have more than one contributing factor. Ruling out cardiac causes is essential before considering these other diagnoses Mikhail2018Chambers1999Fass2006+7 MORE.
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