Should people with defecation syncope see a cardiologist or a neurologist?

Reviewed by Yoshinori Abe, MD

Internal Medicine

Defecation syncope is a temporary loss of consciousness that occurs during or immediately after a bowel movement, often linked to a sudden drop in blood pressure and heart rate triggered by the vagus nerve. Because this reflex involves the autonomic nervous system, people who experience defecation syncope should consider consulting a neurologist to rule out underlying neurological or cardiovascular concerns.

Fainting during bowel movements can signal something more serious, and identifying the cause early is key to preventing injury and getting proper treatment. Take a free, instant, online symptom check to better understand what may be causing your symptoms and to help guide your next steps with confidence.

Reviewed for medical accuracy: 07/20/2026

Important Next Steps

Discover causes of defecation syncope Learn if defecation syncope needs care Find out what causes fainting during bowel movements See OTC options for fainting symptoms Find a specialist for defecation syncope Discover home remedies for fainting episodes Understand if bowel-movement fainting needs evaluation

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Explanation

Defecation syncope is a condition where a person faints while having a bowel movement. It can be related to problems with the nervous system, which is why seeing a neurologist might be helpful.

Syncope in Children and Adolescents: According to the study by Rudziński et al., syncope, or fainting, can have various causes, including those related to the nervous system. This indicates that a neurologist would be suitable for assessing conditions like defecation syncope.
SCN9A Neuropathic Pain Syndromes: The study by Adam et al. discusses neuropathic pain syndromes, which are also related to the nervous system. This further supports the idea of consulting a neurologist for conditions involving fainting.

In summary, since defecation syncope may involve the nervous system, a neurologist is likely the most appropriate specialist to consult. If you're experiencing symptoms like fainting or dizziness, you can check your symptoms with a quick online assessment to help guide your next steps. However, if there are specific concerns about heart issues, a cardiologist might also be considered.

(References)

Rudziński A, Oko-Lagan J, & Kuźma J. (2007). [Syncope in children and adolescents]. Przeglad lekarski, 18431921.
Adam MP, Feldman J, Mirzaa GM, Pagon RA, Wallace SE, Amemiya A, et al. (1993). SCN9A Neuropathic Pain Syndromes. Unknown Journal, 20301342.

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