Most likely sinus related. It's spring, allergies should be flaring up. Grab some Zyrtec-D (now over the counter), it'll clear up most allergies. ...via AlertThingy - Blake Robinson
I have that same problem. For me it ...via AlertThingy - Chris Rodgers
For me it's Dry Eye ...via AlertThingy - Chris Rodgers
Allergy Season... ...via AlertThingy - Adam Hirsch