My Son suffering from Abdominal pain below Navel for past 4 months, All reports (Blood/USG KUB/X ray) are normal only Vitamin D is less. He is underweight. Whenever he eats, immediately he complains pain during eating in below navel area, Doctor's are unable to conclude anything We consulted with Pediatrician & Gastroenterologist (Department of Gastroenterology, Dr V. Sankara Narayanan, Senior Consultant, www.kkcth.org, i got only Huge Bill) but they couldn't find any problem, There is no constipation too, We stopped milk for 1 months no difference, no oily food, no NonVeg, no Spicy Food, Even Rice with Curd also he is feeling pain