Hi, Bilateral sympathectomy is a surgical procedure that involves cutting or clamping the sympathetic nerves responsible for controlling sweating in the hands. However, the sympathetic nervous system also plays a role in regulating blood flow, heart rate, and digestion. The sympathectomy may have affected the function of these nerves, leading to an abnormal response to certain foods. The symptoms you are experiencing after eating certain foods, such as flushing of the face, tingling, shivers, and sweating, suggest an allergic reaction. The sympathectomy may have altered your immune system s response to certain foods, leading to an allergic reaction. Alternatively, it could be a non-allergic food reaction, such as histamine intolerance, which can cause similar symptoms. It is recommended that you see an allergist to determine the cause of your symptoms. They may perform allergy testing or recommend a food diary to identify any patterns between the foods you eat and your symptoms. In the meantime, it is important to avoid the foods that trigger your symptoms to prevent further reactions. If you experience severe symptoms, such as difficulty breathing or swelling of the face or throat, seek emergency medical attention immediately. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Priyanka, General & Family Physician