<s>[INST] My.appendix was removed 20 years ago and now Ive been having a slight pain and burning sensation in that area I ate sunflower seeds and it made it worse and also when I drink beer it hurts also ive had ultrasounds and they found nothing but its getting worse [/INST] Hello and welcome to Chat Doctor. The human appendix is a vestigial organ that it is just an evolutionary remnant in the human body and so when inflamed and removed the body does not suffer from any repercussions generally. Twenty years is a long time and had you had any post-operative complications you would have felt them within 24 hours of the surgery. Since the ultrasound is inconclusive it is best for you to get an abdominal CT scan done to rule out any other organic change. If it is not associated with any other change in the stool you need not worry. The red flag signs where you should rush to an emergency room are-pain associated with fever, abdominal rigidity, projectile vomiting, visible peristalsis, blood in stool and nausea. Possible causes can be ilaecocaecal valve pathology, Irritable bowel syn Chat Doctor.  </s>