Hi and welcome to Healthcaremagic. Thank you for your query. I am Dr. Rommstein, I understand your concerns and I will try to help you as much as I can. This is probably just a gastritis but sweating may be sign of one rare disease called carcinoid syndrome so you should mention it to your doctor. Also, GERD or hiatal hernia may be present so beside xrays you should do gastroscopy to evaluate it more accurately. This is caused by irritation of stomach mucosa by certain food or medications, stress and smoking. It should be treated by changing lifestyle habits first and in severe cases medications or surgery may be required. You need to eat smaller meals but or frequently , avoid long sitting after meal and regulate your body mass. You need to avoid fried food, carbonated drinks, coffee, alcohol and spicy food. You should eat more milk products, vegetables and boiled food. Also, certain antiacid medications may be required by diagnosis should be established first so that you know what further type of treatment is required. I hope I have answered you query. If you have any further questions you can contact us in every time. Kindly regards. Wish you a good health.