My 5 Year Old Daughter Has Had Chronic Stomach Aches

My 5 year old daughter has had chronic stomach aches and loose bowel movements for at least 2 years (typically daily). She is also chronically tired, despite getting the recommended amount of sleep each night. In the past month she has developed a painful itchiness in her hands and feet (with a rash on her feet).

At different times, we have eliminated lactose, gluten and fructose for 4-6 weeks with no remarkable difference. She has had a basic allergy screening and blood work with no remarkable results. I am guessing it is unrelated but she also had her tonsils/adenoids out this past summer. She has been seen twice by the gastro specialists at our local Children's Hospital. No one seems to know what the cause may be and I am feeling overwhelmed and exhausted.

The physical symptoms cause her distress and she can act out behaviorally because she is tired and hurting. We are at a loss, going back to our DR again this week, but are struggling to find answers.