Mike126
Contributor
I would also agree that it sounds like anxiety. I have had the same issues diving from a boat. I get dry mouth and struggle equalizing. I'm 56 so maybe it's a sign of age and that life insurance our spouses have on us!
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My trouble catching my breath happened to me after a long walk in full gear for a shore dive in the cold with a very snug hood. The hoid is very constrictive and had me out of breath even after stopping for a minute to get my fins on before splashing. The water was also colder the I had ever been in up to that point.
I decended to the bottom at 20 fsw and just couldn't catch my breath. After a minute I thumbed the dive and climbed back up on the rocks. After catching my breath (I probably removed the hood) I then adjusted my reg for easier breathing (I have an adjustable second) and feeling better resumed the dive for 60 minutes without issue.
I suspected CO retention at the time but after reading about cold water diving, cold water shock may have been a cause. I will not rule out any of the above suggestions either. I do note that whenever I wear the hood my breathing is affected above water but is fine once under. In this case it was on for quote a bit longer while walking down to the water.
Have your blood pressure checked. That was my very first symptom of hypertension. It was not duplicated in any other aspect of my life. It only occurred immediate after jumping off the boat. It occurred a half dozen times and I was truly both baffled and concerned.
That was after decades of diving. Anxiety and equipment fit were not the issues.
Its now perfectly controlled and zero problems since. Reasonable cardiovascular fitness and equipment fit is also important, but get your blood pressure checked as an easy starting point.