Laryngeal Sensory Neuropathic Cough.

Hi, Are there any doctors who have experience in treating Laryngeal Sensory Neuropathic Cough? I have the problem of chronic cough for past 12 yrs. Cough starts mostly in winters or upon catching an infection and continues for 4-6 months. Cough is severe enough to interrupt my day to day life. Doctors have given different diagnosis like Asthma, Bronchitis, CVA, Hyper reactive airways etc. But no one could treat it. However, based on my extensive research on the internet, I suspect this problem to be laryngeal sensory Neuropathic Cough. The reasons why I suspect so are: 1. No breathlessness or wheezing. 2. Only coughing all day long 3. Coughing increase when in contact with cold/polluted air 4. No coughing during sleep 5. No coughing for few mins after waking up. 6. Asthma medicines/inhalers don't work 7. No coughing when too engrossed in some thing. If anyone have experience is treating such kind of problem then let me know please. Thank you