Nonulcer stomach pain - MayoClinic.com

Nate had his Dr's appointment today with the pediatric gastroenterologist and after now that they think they've cleared up all of the ulcers, they believe it's a chronic thing, something called
Nonulcer stomach pain.

Nonulcer stomach pain is a common, sometimes long-lasting (chronic) disorder of the upper gastrointestinal system, which includes your esophagus and first part of your small intestine (duodenum) as well as your stomach. The disorder can cause signs and symptoms that resemble those of a peptic ulcer, such as pain or discomfort in your upper abdomen, often accompanied by bloating, belching and nausea.

The pain itself starts and then triggers some pretty bad headaches from there. The Treatment (if you look at the list, we've done all of them except this one) is a low-dose antidepressant that will help address the pain:

Tricyclic antidepressants and drugs known as selective serotonin reuptake inhibitors (SSRIs), taken in low doses, may help inhibit the activity of neurons that control the role of the intestines in decreasing pain. Your doctor may suggest antidepressants such as imipramine (Tofranil) and amitriptyline. SSRIs such as fluoxetine (Prozac, Sarafem) or paroxetine (Paxil) also may be helpful.