Hello.
Thank you for asking at HCM.
I went through your history and would like to make following suggestions to you:
1. Chest X-ray is usually clear in
asthma and it is a good sign for you.
2. I would agree with your doctor as common cause of excessive phlegm in
allergy patients is
sinusitis, which is an ENT thing.
3. Of course, sinusitis requires patience while treatment. I usually suggest my such patients regular intranasal
corticosteroids for 2-3 weeks, regular
montelukast and regular steam inhalation.
4. I also suggest my such patients plenty of warm fluids during day, a healthy diet and avoidance of dusts, smokes and air pollution as much as possible.
5. Personally, I would also suggest you allergy testing which will help you identify your allergies and the measures to avoid them.
Hope above suggestions will be helpful to you.
Should you have any further query, please feel free to ask at HCM.
Wish you the best of the health.
Thank you & Regards.