I've been stvruggling with IBS for may years. I can control pretty much all my symptoms, diarrhea, heartburn and nausea. I can deal with those. I get a headache almost everyday and it is relentless. Its not painful its annoying. When I feel gas pressure build my head will squeeze and then I pretty much have the headache for rest of the day or weeks. I have had CT scans blood test colonoscopy, endoscopy all normal. Doctor says its all in my head and headaches and IBS are not related. If anybody has an opinion I would be glad to hear it.