Risk factors


Frequent or severe heartburn may be GERD — a chronic condition in which food or liquid travels backward from the stomach to the esophagus.


Abdominal pain

Find out what causes different types of abdominal pain.

Nausea and vomiting

Sick to your stomach? Nausea and vomiting usually pass quickly but sometimes result from long-term or serious conditions.

Unexplained weight loss

Unexplained weight loss: Symptom — Overview covers possible causes of unexplained weight loss.

Tests and diagnosis

Upper endoscopy

Find out what to expect during your endoscopy exam.

Mar. 14, 2012