Yes medics don't have all the answers. My doctor didn't know for example Propranolol usage, unlike other beta blockers, can cause hyperglycaemia and I was taking it for a year until recently.
Here is a link ;-
People with restless legs syndrome have uncomfortable sensations in their legs (and sometimes arms or other parts of the body) and an irresistible urge to move their legs to relieve the sensations. The condition causes an uncomfortable, "itchy," "pins and needles," or "creepy crawly" feeling in the legs.15 Apr 2015 Restless Legs Syndrome (RLS): Causes, Symptoms, Treatments, and ... www.webmd.com/brain/restless-legs-syndrome/restless-legs-syndrome-rls
I have had RLS for many years and take two lots of Ropinirole a day then 1 hour before and it has helped so much.