"Wherefore to some, when being in bed they betake themselves to sleep, presently in the arms and leggs (his spelling), leapings and contractions of tendons, and so great a restlessness and tossings of their members ensue, that the diseased are no more able to sleep than if they were in the greatest Place of Torture."
I would say that if RLS symptoms were noticed in 1685 by a British neurologist with no internet, there is no excuse for our "modern time" doctors. It is the most perfect explanation ever, to me. It even includes the arms! So, why doctors these days can say it does not exist, it has been around for centuries and documented.
I printed it out for my neurologist years ago, and she has it framed and hanging in her office!