Just to share my unlucky stint with Vertigo...
On the recent trip to Perhentian (Project AWARE Underwater Cleanup 31 Aug - 2 Sept 2007), I was unlucky enough to had a bacterial inner-ear infection leading to what the ENT specialist described as a "rotary vertigo" when back on land!
What happened was, during one of the dives in Perhentian I felt really woozy. I thot it was just due to irregular breathing pattern as I was going here and there, up and down taking pictures of the divers doing the underwater cleanups. As soon as I surfaced, the vomiting started. Up on the boat, the vomiting became worse. I've never had this experience in all 10 years of diving. I felt that the whole world around me was spinning around and that induced one vomit session after the other. I know it was definitely not seasickness and suspected maybe a DCS. However, back on land and a few hours later, the tell-tale sign of DCS (numbness and tingling at the joints) did not appear. The world continued to spin around. The only way to lessen the effect was to lie down on my back. The vomiting session continued until there's nothing more that came out, haha.
Back in KL, I went to see an ENT specialist who put a scope into my ear (he charged RM50 just to use that piece of equipment, haha) and showed me a really nasty bacterial infection on the walls of the inner ear. I guess the infection (only on one ear) affected the way my body perceive balance which caused the whole world to spin around. Antibiotics were prescribed and a few days later the infection went away.
It was a really nasty experience, my first in 10 years of diving and also my first vertigo experience. When we dive, salt water inevitable gets into the ears and unfortunately, sometimes they carry enough bacteria to cause a nasty infection. Coupled with the fact that my body was tired and stressed out during that weekend probably meant that the body's defense mechanism wasn't up to the mark that day and bacteria won that day.
I survived