Possibly the worst pain of my life - high RoD sinus pain. You need to reduce the inflammation in the sinus lining to allow the pressures to equalise. Otrivine nasal spray or Vicks Sinex work for me (taken before flying, although if you feel that twinge on the way up a quick blast might help before descent). Also if you're doing a reasonable length sector in an air conditioned (and thus dry) cockpit it sometimes dries things up in time. If it's still hurting on the ground then an anti inflammatory such as Brufen might help. Hope this helps, DH