Jetset Lady, you need a proper assessment. Have you ever been to see a specialist about it?
You might like to look at the website of the UK support group at
Welcome to the Ekbom Support Group There's a whole list of possible treatments, but at minimum you need to see a consultant physician, and preferably someone who specialises in either neurology or sleep disorders. You are entitled to ask your GP for a referral.
Sorry I can't help with the effect on a PPL medical.
TV