It's a tough one to figure out. The majority of people who take the survey remember suffering head trauma of some sort as a child. On the other hand, the vast majority of people, with or without CH, can recall some fairly significant head trauma as they grew up!

Most of the suspicion points to a screwed up hypothalamus. The doctor at the last convention convinced me it's something you're born with. In sets of identical twins with CH...not only do both of the identical twins develop it, they both would start the initial onset at roughly the same time. The odds of both twins having somehow suffered identical head trauma are pretty slim.

Now if they can just figure out how to un screw up our hypothalamous...

Joe