Hi & welcome to the forum! Sorry you have Lyme, but glad you found us!
Check out this link:
http://emedicine.medscape.com/article/1051695-overview
I bumped into this article when I was searching for ideas of what some of my rashes could be. Mine are a little different, but I think this article gives a lot more info than anything else I've been able to find.
Also, you might want to contact ILADS - http://www.ilads.org/ - they may have a suggestion for who to contact in Scotland (or the UK in general) for proper diagnosis & treatment.
Take care,