You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is An alcoholic who presented with heaburn is diagnosed of having esophagitis. The MOST common cause of esophagitis is: and explain in detail?
Esophagitis is defined as the presence of signs of inflammation of the esophageal mucosal surfaces, both macroscopically and microscopically. Gastroesophageal reflux disease (GERD) is the most common cause of esophagitis, followed closely by medication-induced and infection-induced inflammation. Ref: Chan W.W., Burakoff R. (2012). Chapter 154. Gastroesophageal Reflux Disease and Esophagitis. In G.V. Lawry, S.C. McKean, J. Matloff, J.J. Ross, D.D. Dressler, D.J. Brotman, J.S. Ginsberg (Eds), Principles and Practice of Hospital Medicine.