Hi. Thanks for your query and an elucidate history. It is imperative to undergo multiple tests in case of pain in abdomen of a child of 7 years as she may give a proper and detailed history. I would advise her the following:: -MRI of the brain as she had a history of fainting in January 2011. -Ultrasonography and complete hemogram, and stool test. -Clinical / Physical examination by a Pediatric Surgeon as an expert opinion and advise you a proper treatment, investigations and get an appropriate diagnosis. -Get a course of proper antibiotic, metronidazole, anthelmintic. The causes of pain in abdomen in a child are as follows: The most probable cause of pain in a child -Tummy tonsils- meaning enlargement of the lymph nodes of the abdomen. -Appendicitis- by default this has to be ruled out in every case of pain in -abdomen of a child. -Worms. The best diagnosis is a high resolution ultrasonography. some blood, urine and stool tests. A therapeutic trial with a course of an antibiotic, metronidazole and probiotics under the guidance of a pediatrician / Surgeon always helps to solve the problem and to get a diagnosis. Also given is a dose of medicines active against worms in intestine.