Nausea and vomiting

[Passion4Divin]

What causes a diver to become nauseated and vomit under water and when reaching the top? We are not talking Narcosis because the depth and time are very minimal. Like 35 feet for 5 minutes using regular air. Also on Nitrox 34% at a depth of 45 feet and time of about 40 minutes. Lake waters, no currents or waves. It is because of the dry air or what?

Thanks for any help or advice on how to stop this!

[rmediver2002]

Any sensation of vertigo?

Thermocline? Clearing ok?

Diving off a small boat? (exhaust fumes?)

Bad air?

Something you will want to look closely at... Is your breathing technique, make sure you are not inadvertantly swallowing air while breathing off the regulator. During ascent as this trapped air expands it may be causing the sensation...

Jeff Lane

[paulwlee]

Constricting wetsuit?

A close friend of mine who I convinced to try diving had the same problem during his OW class. He said he was nauseous the whole time and had a headache afterwards.

Not sure what caused it, and he probably isn't going to do any cold water diving any more (and he moved to another area).

But he said he did really enjoy warm water diving in Cozumel during a vacation, so hopefully he will still dive every once in a while.

[rmediver2002]

A close friend of mine who I convinced to try diving had the same problem during his OW class. He said he was nauseous the whole time and had a headache afterwards.

Not sure what caused it, and he probably isn't going to do any cold water diving any more (and he moved to another area).

The restriction from the tight wetsuit would most likely not allow a full exchange within your friends lungs resulting in a buildup of CO2 and the subsequent symptoms of hypercapnia...

Nausea and a headache...

Jeff Lane

[GottaDive]

It may sound crazy and I can't explain it, but my friend who had the exact same problem, stopped wearing a hood and never had the problem again. He's a PADI instructor now.

Hope you can work through it!

[GoDown]

As stated above it could be air in your stomach. A similar thing happened to me when I first started diving and was using rental gear. The reg seemed to be giving me too much air when I inhaled and so I noticed I was gulping down small amounts of air every once in a while. No problem while down but upon surfacing had the worst pan in my gut, totally nauseous, and just couldn't get into a comortable position. As soon as I got into the boat, leaned overboard and let out a half puke half burp and felt better almost immediately. If that sounds like you probably what it is.
If you can adjust your flow try turning it down a bit and see if it helps any.

Good luck,

Scot

[Passion4Divin]

Thanks for all the help. No, a hood wasn't involved, so that is out! I have heard that a hodd affects equalizing. The wetsuits fits fine, not too tight, maybe a little loose. I am thinking that the swallowing air is the answer. I never even thought about that!

I have an ScubaPro G-50 (think that is the kind) reg, so I sholdn't have any problems adjusting.

My hubby and my daughter both got the same feeling this past weekend but him more than her. She was at 35 feet for about 10 minutes and boom....she felt sick and he was uner for about 40 minutes and came up green! I will let them try a different breathing technique!

Thanks again and I am so glad I found this forum! you all are great!

Happy Diving!