I read an article once that said RLS was a form of akathisia. Maybe that's wrong and got me confused.
I've had the RLS from severe anemia. It was just the legs and only at night. It's supposed to be due to a low iron level in the brain.
I've had the all-over thing around the clock from drug withdrawal. Drugs were Librium or hydrocodone.
I've also had it from too much cold medication or a too rapid increase in dose of amitriptyline.