Do students remember everything from their OW/AOW courses? Most of us know at least a few things about "the bends," but maybe all of us don't specifically recall "skin bends" as being a thing.Do instructors no longer teach anything about deco sickness - signs/symptoms?
My wife, an experienced diver, has had skin bends a couple of times when we dived less conservatively even though still within NDLs. She recently got tested for a PFO, and sure enough has one. She's considering whether to have it closed.