I spent quite a while looking and I haven't found exact source info for the school texts that I have. So at this point I will just have to concede skin type bends as ONE of the more common types 
I personally have joint pain fairly often, but I have since before diving. this comes from sports injuries and other sorts of abuses to my body as a youngster
As I often say, I'm no expert... but I've had the priveledge of learning from some of the best
I'm glad to see that people on here can respond in polite and thoughtful conversation...as opposed to the jr high mentality that I have encountered in other forums...
Thanks folks!

I personally have joint pain fairly often, but I have since before diving. this comes from sports injuries and other sorts of abuses to my body as a youngster

As I often say, I'm no expert... but I've had the priveledge of learning from some of the best

I'm glad to see that people on here can respond in polite and thoughtful conversation...as opposed to the jr high mentality that I have encountered in other forums...
Thanks folks!