<s>[INST] Hi,Lately my sciatica has been more severe and when it is at its worst I been having abdominal pain in the area of my appendix. During this time I am nauseous  and become constipated that seems to last for 2-3 days at a time. Ive been to the Emergency dept. and my GP trying to figure this out because it has been going on for the last 3 months.Can my sciatica be causing these other symptoms?  Thanks, Bruce [/INST] Hi, Sciatica cannot directly cause these abdominal symptoms. If very severe pain due to autonomic nervous system imbalance where in you try to resist pain there may be chance of variation in bowel movement, constipation. It is very difficult to tell the cause without complete examination. Since abdominal pain in appendix area, nausea with constipation I advise you to get done USG abdomen and pelvis once to rule out appendicitis or any bowel obstruction. For pain, you can take NSAID like ibuprofen and get evaluated for cause of sciatica and get treated for it. This may relieve all your symptoms. Regards </s>