17 year old son suffering from non productive cough and cold with post nasal drip for 1 month, no fever. He had long history of bronchitis in the past, but last 2 years was ok. Now on seroflo inhaler 125 2 puff 2 times daily, montair lc 1 daily, acebro psyllium 100 mg bd, steroid nasal spray. CBC is 13000 total count and esnophillis 8 %, absolute count esnophillis1040. Ige level 512 (last year. 5 doses of hetrazan given, not much difference. Please advise.