Thank you for the responses. To late on not scratching the legs and now there open skin. But I still got some Epsom salts and poured about 5 cups in some hot bath water. I would welcome any pain from the salts over the insufferable itch. I mean it is really bad.

So I take it will take more than one soaking with the salt to get the itch to go away. The itch is still there and there was no pain from the open skin (maybe because the legs are a bit numb)

@Health girl - will try your remedy next if the salts don't do it.

Could not bear the itch any longer so applied a generous amount of desonide ointment 0.5% to the legs. I have used this ointment before on another area of my skin which was itching but for a different reason but did fix the itch and the problem as well. So hope it works with the legs.