It is mere coincidence I suffered only last night and came across this website today. It's been interesting as dopamine is mentioned and I take an antidepressant containing the said drug! I will behaving a conversation with my GP soon. However,a colleague
Told me recently that her elderly mum suffers with RLS too and uses a rather surprising gel. If anyone is interested in this then take a look on the website of Feathergills Emporium & search Restless Leg Gel @ £5.50 a jar. Its based in Hebden Bridge.
I've no idea if it will help but I'm about to order online. At that price it's worth a try.