Hi -
My 10 yo daughter had acute stomach pain for several months (4/13 start). The GI put her on 25mg Elavil daily (7/29). She took it for 2+ months, but ultimately, it was surgery (9/23) that relieved the pain - they found and clipped an adhesion that was pinning her colon to her abdomen, and removed a normal looking appendix. The doctors won't speculate on which or what caused the pain to start or stop, however.
She stopped Elavil 5 days before surgery (9/17) and had a very hard weekend, I didn't realize there would be a withdrawal effect, but her heart was racing (initial EKG w