On call. I am a 71-year-old man with diabetes and high blood pressure. I take Glucophage for my diabetes and Zestril for my blood pressure, and my doctor says both problems are under good control, but I've developed a very annoying problem. Every time I eat, I develop terrible sweating on my face and neck. It only lasts 10-15 minutes, but my shirt collar gets soaked and I'm too embarrassed to go out to dinner. Am I allergic to something in food? Am I getting hot flashes as my wife did when she had the change of life?