Cobb is rigght on the sinus thing - the barotrauma which you can not feel at the time comes back as a headache. If it goes away with something like Dristan, that is what it is. If it is ommitted deco , it will not go away for a while, and it is hard to figure the right deco for an air dive , even to 80 feet, but stopping momentarily as Cobb suggests is a major advantage. If it is a shunt causing it, look out - the bad hit is coming on a deeeper dive, and if it is in fact a breathing problem , don't let the guy use nitrox until he corrects it - that is asking for a tox. First guess is still the damage from the uneven pressures, like Cobb said - give it the Dristan test ( after the dive, not before). -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send list subscription requests to `techdiver-request@aquanaut.com'.
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