Anticonvulsants target non-epileptic causes of abdominal pain via sedative mechanisms. It may also act just as a placebo. The prognosis is generally good and most patients are benefitted from medicines alone.
Anticonvulsants are used for treating non-epileptic causes of abdominal pain by inducing sedation.  They can also be effective as a placebo. The outlook is usually positive, with many patients experiencing improvement through medication alone.