<s>[INST] Im 58 yrs old, i been having stomach pain since february 2013. I had all kind of test. Endoscopy, colonoscopy, ct scan, ulra sound, and biopsy. The specialist cannot find anything unusual, i have acumulatio of fat on my liver, but my specialist said there is nothing to worry about. I been taking all kind of medication but nothing help the pain.Right now im taking elavil for 3 months. But im still in pain. What could be the reason? [/INST] Since the diagnostic studies you have done are negative there is nothing to worry.  What is your age?. Are you taking timely diet?  This may be due to amoebiasis or may be some bacterial infections. You can continue   Elavil as per Dr's recommendation.  Take healthy diet.  Wish you speedy recoveryThank you </s>