If you feel reverse block pain in your middle ear upon ascending, descending briefly and then re-ascending slowly should resolve the issue. You can also move your jaws forwards and backwards, or swallow to stop the reverse block.
■Sinus
Whether due to irritation from a cold or allergies, or overdoing the valsalva maneuver, bleeding in the sinus cavities is a cause of reverse block. If you are experiencing any bleeding, you shouldn’t dive.
Specific Body Air Cavities and Reverse Block
