<s>[INST] I have had an ultrasound and an endoscopy to determine what my stomach issues are. I suffer from diarrhea and stomach pain and I have a hard or firm section just below my sternum. My doctor says there is nothing wrong that he can find, but I am still troubled by this to the point of not eating b/c I never know how it will impact me. Also, the skin on my stomach is always cold regardless of what I am doing. Even if I wrap my stomach and exercise my skin is always cold. [/INST] Hello..As per your narration, more chances are that you are suffering from irritable bowel syndrome. This problem aggregates if one constantly keeps thinking about hi/her disease and takes undue stress. Please correct your diarrhea first and if your ultrasound is normal ,dont think much. Take cap racecadotril OD for five days , you will be all fine . Get tour thyroid profile done to look for your cold skin causes. </s>