What you be your first thoughts of someone (male age 55) presenting with 5 years of fatigue and loose bowels. the last three years have included muscle aches and some joint pain. all complete blood tests have shown nothing of concern. thanks you?

Please see an Allergist M.D. to have a thorough evaluation to find out if you are having a chronic allergic reaction.

If you have had unintended weight loss you may have malabsorption and it would be prudent to consult a GI specialist. Deficiency of essential nutrients due to malabsorption can explain your symptoms, including diarrhea. Wish you good health!