 [ Symptoms ] what should i do about diarrhea lasting more than a week  along with diarrhea i have severe stomache pain that spreads to my back and i feel weak and have no energy [ Disease ] i am sorry to hear your husband is going through this it sounds very distressing for both of you despite the negative test results i would urge you not to give up some conditions evolve over time and may take repeated testing to identify i would suggest you make a follow up appointment with your husband is primary health care provider to discuss these symptoms and how they have progressed edema or swelling of the legs and arms often is occurs when the veins are not working properly to return blood to the heart blood pools in the veins and some of the fluid component of the blood seeps into the surrounding tissue causing swelling very often excessive salt intake contributes to edema your husband might consider reducing his salt intake read food labels carefully you will be surprised how much sodium is lurking in there smoking cigarettes also can contribute to poor circulation especially in the legs if your husband smokes i would suggest he seek medical help to quit hope this helps