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Hoarseness

You might think you're in the early stages of a cold when your voice starts cracking, but hoarseness can be another heartburn symptom.

If stomach acid is seeping into your esophagus it can irritate your vocal cords, says Dr. Pfanner, who is also a gastroenterologist at Scott & White, in Temple, Texas. Pay attention to when your voice sounds more husky than usual. If it's after you've eaten, you may have reflux.

Next: Sore throat