I`m having episodes of nausea, tingling that starts in my stomach or intestines and turns into cold chills that radiate down to my legs and then through my entire body. when that subsides, i get the sweats. The whole thing lasts about two minutes. I have had these for several years and was hospitalized for two days while they did all the cardiac tests, stress test. xrays, sonograms, everything was negative. They now have me on reglen? thinking its stomach related. They tried a gastric scope but my stomach was full of food after 24 hours so they could`nt see anything. The symptoms went away for awhile which they often do but came back today very badly, about 15 episodes today. Can you offer any ideas? I`m starting to worry alot. I turn 66 in Nov. Have had Diabetes for at least 20 years, which is under good control. Last HbA1c was 6.8. I had a stint put in my heart almost 2 years ago which they found I needed while they were looking for this problem