My boyfriend has had a searing pain in his left lower abdomen for over 5 years. Some days it's minor burning and other days it's intense and nauseating. He's been to several doctors, had dozens of tests including x-rays, ct scans, ultrasounds and colonoscopies, He had a hernia repair in that area and the surgeon looked around and found nothing. After the surgery, everything went back to the same symptoms. He is frustrated and doesn't know what to do next. Got any suggestions?