I am hungry constantly. The symptom is relieved for only 5-10 minutes after eating, then returns. Have been to numerous gastroenterologists and had every IBS/Crohns/Colitis related test several times over. Though the diagnoses vary, no one has been able to identify or cure this. (Stool tests are always negative for parasites; colonoscopies/endoscopies come back negative.)
The only abnormality that has shown up is a "slightly inflamed Ileum" - but I'm told that would never create this kind of severe condition. One GI Dr. listed it on some form - reluctantly - as "mild Crohn's." I said doctor, there's nothing mild about this!!
I monitor my diet VERY carefully and eat as well as I can - which must be helping on some overall level - but does not remedy the chronic hunger. I try reducing stress as much as possible and do meditation and deep breathing...which is a pleasure...but doesn't seem to affect symptoms.
Needless to say, severe fatigue/lethargy accompanies this condition.