Understanding Fainting -- Symptoms

Medically Reviewed by Daniel Kantor, MD, FAAN on May 15, 2025

Depending on the cause of your fainting spell, you may have some or all of these symptoms before or during the episode:

 

You have an unexplained fainting episode. Especially if the episode occurs during exercise, happens during heart palpitations (feeling the heart beat irregularly), or if you have a family history of recurrent fainting or sudden death.

Add WebMD as a Preferred Source to see more of our trusted content across Google Search, AI Overviews, and AI Mode