From Boercade

commotio = com + mote + io

com-: together

mote: derived from Latin "movere", meaning "move".

-io: forming name of a disease

So commotio means:

One disease that organs move together.

But their moving directions are always opposite, so this will cause certain malposition of internal organs, and cause certain discomfort.

Evolution of usage

One disease that cerebri move together with head.


Commotio cerebri.

Commotio cerebri.jpg