my mother, who is 70 was brought to the er two weeks ago with pain throughout her body ,no appetite, headaches is still suffering and doctors still cannot find out whats wrong.they have ran many test and have no answer.she is losing weight and cannot eat .she has chrones and is been on steriods for 30 years.they have ran test and her chrones is not acting up .they have tested her for lupus,blood infection etc.and have come up empty handed. do you have any advice?