In Czechlands it used to be called "mild brain dysfunction". They renamed it, to make it sound less horrible. They are not certain what causes it though.

I am taking a teacher's course and spec ped teacher pretty much scared us about how environmental pollution can cause it. Or that if we females ever gotten drunk or smoked a joint it can have impact on out eggs and our children may have various kinds of problems.

(and apparently I am not clumsy klutzy-klutz, but I have dyspraxia)