What Causes Constant Throat Irritation?

I'VE SEEN FOUR ENT'S IN THE PAST 5 YEARS FOR CONSTANT THROAT IRRATATION.GOT MY TONSULES OUT OVER 2 YEARS AGO WHICH WAS SUPPOST TO BE THE PROBLEM BUT STILL HAVE IT.I DO HAVE ACID REFLUX BUT TAKE PRESCRIBED PRILOSEC,I'M 30 NOW AND SMOKED SINCE I WAS 19,I STOPPED SMOKING JAN 2010 AND NOW SMOKE IF I DRINK,DON'T KNOW WHAT TO DO ANYMORE I SPEND MONEY ON CO PAYS AND DOCTORS THINK I'M CRAZY PLEASE HELP...