HEARTBURN

Causes:
Relaxing the lower esophagus sphincter

Affects on the body and symptoms:
Burning sensation felt in the mid-epigastrium behind the sternum


Treatment:
Antacids, H2 receptors (e.g. cimetdine) proton pump inhibitors (e.g. lansoprazol)

Interesting facts:
Heartburn can also be felt in the throat

References:
Taber's Cyclopedic Medical Dictionary VERSION 19

http://www.webmd.com/heartburn-gerd/guide/understanding-heartburn-basics