Hi Laxman. Im a scuba diver and was having sinusitis
for quite some time. Now finally I have got good control. Don't worry u will be able to go diving without suffering
from all the pain. its not so much the cold
temperature but the pressure
changes that causes sinusitis to occur or flare up after diving. I was on a relatively long course of antibiotics
to clear out my infection. Since then I have been taking precautions everytime i go diving.Particularly important to avoid diving when you already have sinusitis because that is sure to worsen it. Im sure a good doc will be able top help you. All the best.