--in that, technically, "acquired pressure palsies" are simply another name for compressive neuropathies, which are very common, with or without other associated systemic conditions.

There are several parts of the human body that, simply due to our anatomy, are very prone to compressive effects. The most obvious are the cervical and lumbar spinal nerve roots--the legacy of walking erect--but the wrist and ankle, the back of the knee, the outer hip, and the pudendal area are all places through which important nerve tracts pass through very small spaces and are highly prone to getting compressed.

Those people with the genetic profiles that lead to HNPP are simply that much more prone to having this happen--and in many parts of the body besides these.