How common are seizures after undergoing surgery?

Reviewed by Yoshinori Abe, MD

Internal Medicine

Post-surgery seizures are relatively uncommon but can occur due to several factors, including anesthesia effects, post-operative infections, electrolyte imbalances, medication reactions, or underlying medical conditions such as epilepsy or prior brain injury. Symptoms may include convulsions, confusion, loss of consciousness, or unusual sensations following a procedure.

Because seizures after surgery can signal anything from a temporary side effect to a serious complication requiring urgent care, identifying the likely cause quickly matters. A free, instant, online symptom check can help you evaluate your specific symptoms, understand possible causes, and determine whether you should contact your surgeon, visit urgent care, or seek emergency treatment—giving you clarity and confidence in your next steps.

Reviewed for medical accuracy: 07/20/2026

Important Next Steps

Discover if post-surgery seizures need care Learn likely causes of your seizures Find out if seizures are serious See OTC options for seizure symptoms Find a doctor for seizure concerns Discover medically valid seizure home remedies Understand if surgery caused the seizure

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Explanation

Postoperative seizures may happen for several reasons:

Anesthesia and medications: Some anesthetic drugs or medications used during surgery can lower the seizure threshold. Metabolic imbalances: Changes in blood sugar, electrolytes, or oxygen levels during or after surgery can trigger seizures. Infections: Surgical site infections or meningitis can lead to seizures. Brain surgery: Patients having neurosurgery are at higher risk of seizures. Underlying conditions: Pre-existing epilepsy or brain abnormalities increase the chance of postoperative seizures. Stress and recovery: Physical stress and fatigue after surgery may also contribute.

Overall, seizures after surgery are not very common but should be reported immediately to medical staff for proper management. If you're experiencing unusual symptoms after a procedure, you can check your symptoms with a free AI-powered tool to help you better understand what might be happening before your medical appointment.

(References)

Hunter GR, & Young GB. (2011). Seizures after cardiac surgery. Journal of cardiothoracic and vascular anesthesia, 21036061.
Goldstone AB, Bronster DJ, Anyanwu AC, Goldstein MA, Filsoufi F, Adams DH, & Chikwe J. (2011). Predictors and outcomes of seizures after cardiac surgery. The Annals of thoracic surgery, 21256303.
Kvam DA, Loftus CM, Copeland B, & Quest DO. (1983). Seizures during the immediate postoperative period. Neurosurgery, 6828220.

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