Sometimes a deficiency can cause the symptoms you describe, especially Vitamin D, B12, Calcium and Potassium.
You're correct in RLS, (Restless
), your legs feel fidgety or crawly unless you move them.. This is considered a sleep disorder and should not follow your into your waking hours.
Some medications including antipsychotics, diuretics, statins, and steroids can also cause his symptoms.... I assume that is why his Physician tried reducing to discontinuing his statins.