Thank you for the help.

Actually there is no active discharge, After working for five to six hours I start feeling difficulty in breething and block nose, at that time I have to use sympathomimietic nasal spray to keep my nasal passages open. The spray opens the passages and I feel POSTNASAL DRIBBLING The POSTNASAL DRIBBLING is mucoid and clear.

I will try Natrium Mur and Arsenicum album and inform you. thanks for your kind help.