I have had recurring symptoms of heartburn, diarrhea, severe abdominal pain, upset stomach through the years since I was about eight years old. I am now nineteen & I was diagnosed with Gastritis at seventeen after years of visiting doctor after doctor with the results from incompetent doctors saying "Nothing seems to be wrong & everything appears to be normal." Good grief! Anyway, the doctor who diagnosed me has to perform an endoscopy this week to determine if anything else is wrong with my digestive system. I was just wondering what causes Gastritis & if it is curable.