Nope, absolutely a real thing. Hope you never experience it. I suffer from it and have for years. Many nights spent crying hoping the feelings stop so I could sleep.
It's a neurological condition ,that has existed forever,that they gave a name to ,about 15 years ago,so they could go about prescribing drugs to any poor woman with a leg twitch.
Im not saying the condition doesn't exist,but its not a new ailment ,and its not really a leg problem .The fact it had not even been heard of before twenty years ago,as restless leg syndrome ,and suddenly its named and there are drugs for it ,says volumes to me.
It should be treated at the source as a spinal condition ,and not with dangerous drugs .They're even renaming it after two doctors,that lived centuries apart ,for what reason ,I have no idea.
I treat people with the issue,and they get relief from spinal treatments ,not the drugs .