I know exactly what you are talking about. I tried to write a thread one time and figured everybody would think I was nuts. I honestly couldn't tell if my legs mainly were so cold they were burning or if they actually were hot. And my hands were freezing. Ticker even suggested I see somebody about circulation but I am sure it was the lyme. Maybe even that "thick" blood they talk about from the lyme.
This has pretty much subsided for me after months of abx and natural treatments such as cats claw. I really hadn't even thought about it for a while so I guess that is one thing I can cross off the list.
In Texas it is near 100 every day and our upstairs is pretty warm but when I have the twitching in my legs I like to sleep up there so I don't keep my husband awake. We have turned the temp in the house down and to me it is too cold downstairs and half the time I sit and watch tv with a throw over me. We even turned it back up last week just 2 degrees and then it felt too hot. You might try this and see if you have the same reaction. Like the rest of us I am sure you are running a low temp which is normal for lyme.
I agree with takemylife, I think the detox baths help a lot. I can just about tell when I need one. Like Romans I am wiped afterward but feel a little better the next day. Sometimes I am afraid to do them without my husband home for fear that I won't get out. I was just taking epsom salt/peroxide bath and having a lot of twitching and takemylife said to add baking soda too. I did this yesterday and it was so much more relaxing I thought I would fall asleep in the tub. Much better. Wasn't sure how much of it to put in so I added 1/2 cup to the normal mix. I did have a hard time getting out because I was so relaxed but that's okay. I know I need them. He said this would get better with time.
Hope you feel better when they do the picc-line. Keep us posted.