he has lost weight, for the passed year he has been in hospital in and out all Doctors don't seem to know what this is they have done scans on his liver and kidneys also it seems to be normal he has been referred from specialist to specialist with to improvement, he has to put pressure always on the right hand-side of his lower abdomen for the pain to subside and he was even put on unfit to work because of this. i need help what other tests should he undergo and his 57 years old.