What are signs of a gastritis flair up?and how long do they last when being treated?

Gastritis which is inflammation of the lining of the stomach classically causes upper abdominal discomfort & nausea and vomiting can occur. Mild to moderate cases come under control in several days of taking omeprazole or pepcid providing you also abstain from alcohol, caffeine, aspirin,advil,etc. Severe cases require 10-14 days of treatment as a rule. If not, a gastroenterologist should be consul