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For years, Mary Rose struggled to get off to sleep or to stay asleep, because she felt like she was being attacked by insects.

“Imagine having a swarm of bees buzzing inside the skin of your legs, biting you,” she says, describing the sensation that overwhelmed her.

“It’s really very, very painful.”

Now in her 80s, the art historian has a condition called restless legs syndrome (RLS), which tortures her at night.

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