Conversation: The conversation between human and AI assistant.
[|Human|] I have upper right side abdominal pain (below the ribs), night sweats, low level headache .  This pain started two weeks ago.  Had CT scan.  No indication of what causing this pain. Digestive tract is fine.  I am 67 years old and in great Heath. Male. Thanks HUGH PARSONS
[|AI|]  Hello! Thank you for the query. Upper right abdominal pain is usually caused by gallstones. Gallstones are in most cases invisible in CT. That is why, abdominal ultrasound is better in stones diagnostics. Gallstones usually give the pain which radiates to the back. Nausea and vomiting can be present. So if your pain seems to be similar to that, please visit your doctor and have abdominal ultrasound. Night sweats and headaches can indicate an inflammation. Hope this will help. Regards.