My wife is having cough and it is there for almost more than a month now. The cough j's very mild with few occurrences in the day time and gets bad in the night. We consulted two physicians and both rooted for allergy. We did lots of tests as well. The cbc test result was around 12. 72 thousand. We also did an IgE test whose result was 19.45 and a PFT whose results were normal. We took medicines as advised by the doctors but of no use. Now I am sort of feeling helpless as the cough seems to linger around. I need suggestions regarding the same. Should I consult an ENT specialist or any other specialist this time Oz we've already consulted two physicians, or should I go to them once more.