My 40 year-old patient complained for 10 months over an ever-increasing cough. While at the beginning of the cough several times but rather occurred on the day, for me under stress, he coughs now several times per minute. The cough is not productive and was primarily reported by a cold.

Omeprazol was already given for a long period of time, still did not see any effects.Even after all medication there is no change in patient. What may be the cause? TB tests:-Ve Asthama: -Ve