Scary after dive experience?

[LKunze]

Just a little story of something I experienced diving this past weekend. When ascending after the first dive I noticed a kind of ice cream headache (that sort of "cold shock" type feeling.) in my temples once I reached about 30 ft. What's strange is that my sinuses were totally clear and I wasn't sick at all and felt great before this happened and during the dive. My first thought was that it was a sinus squeeze or block of some sort but my ears were cleared and felt fine. I ascended ok though to the surface after the safety stop and felt ok at the surface. We ended up farther away from our entry point than we had antipated so the thought was to take a compass bearing and descend to 10 ft and swim underwater back to the entry point as we all had plenty of air left. I didn't even get to 10 feet and I felt this same pain in my temples again. I had to abort and surface swim back. I was a little concerned. We broke for lunch and a 2 hour surface interval and decided to try another dive. The second dive was to 90 ft and I didn't notice this headache feeling really much at all on the second dive, perhaps a little bit on ascent but it didn't "hurt" or feel uncomforting like it did on the first dive.
On my drive home, from the dive, after about an hour on the road I stopped at a wayside rest to use the can and get out and stretch. I noticed a weird sound when I moved my neck around. It sounded and felt like something was squishing/crunching in the back of my neck but I experienced no pain whatsoever. This was exremely strange. When I got home an hour and a half later I didn't notice the squishing/crunching in my neck at all and felt fine and thought nothing of it. I posted this over at ScubaBoard and they said it sounded like I had "Subcatenous Emphysema" where air became trapped in the tissues of my neck due to significant barotrauma. The medical regulator over there recommended I contact DAN. This scared the crap out of me.
So...I called DAN this morning and explained everything to a doctor there and he said that it did in fact sound as though I had experienced "Subcataneous Emphysema" but the fact that the symptoms cleared quickly and that I have had no side effects since the day of diving that I probably didn't suffer any "permanent" damage. This was a huge relief. The DAN doctor I spoke with gave me a name and number of a diver physician in the Twin Cities that I can contact to have them check to be sure. Apparently this condition is more common in cold water, etc but it's still a mystery to me why it happened because my dive profiles were easily within acceptable limits. Just thought I'd pass this on.