Wow, I have occasional RLS and it drives me nuts, but I had no idea it could be so bad as to wear our sheets! I have no idea why it comes or why it goes, Im just glad when it's gone! The ol' bar of soap in the bed trick usually helps, so I keep a bar by the bed.
If I take Benadryl it really goes bonkers, tho, I know that much. Antihistamines make me really sleepy, but with my legs jumping all over, there's no falling asleep. Grrrrrr.
I really feel for y'all who suffer with this. Glad to know there are things that help.