Hello
There is no need to take antibiotics every time you get a flare up.
Most of the time sinusitis is viral in nature and only .5 to 2% cases develop bacterial infection.
Best treatment for sinusitis is steam inhalation three times a day and taking oral liquids.
Avoid cold drinks and use nasal decongestants for 4 to 5 days only.
For immunity
You must walk daily in morning fresh air
Avoid dust and smoke
Take regular steam inhalation at bed time
Do pranayama and deep breathing
Learn to use NETI from some yoga expert.
Take plenty of fresh fruits specially citrus fruits.
Thanks

Hello Mr. Vidyadharan,

Thanks for writing in.

Unfortunately, there is no permanent treatment of allergic conditions. But if you can identify what you are allergic to, it can help things to quite a great extent. The following measures will help prevent attacks:
a. Keep your house and place of work extremely clean. Get rid of unnecessary carpets, pets and any kind of thing which is difficult to maintain
b. Take steam inhalation atleast twice a day.
c. Sodium cromoglycate is a drug available as a rotahaler ( a different form of an inhaler) which can help to prevent attacks. Since this is a prescription drug, please speak with your physician about this.
d. Vitamin C has been shown to prevent and take care of allergies. So have plenty of citrus fruits.
e. Have a healthy and balanced diet. This with an exercise program will help you improve your immunity in general.
Hope this helps.
Regards