Restless Legs Syndrome
"I am male, white, 92 years old,  very healthy, little exercize. Have  had RLS  for ~30 years  when  sedentary - reading, TV,  trying to go to sleep. 
Six weeks ago  our GP  Rx  300mg gabapentin.  I take one in early afternoon and it has worked like a charm.  No  side effects so far."