From reading all these posts I think there are two different types of problems here.
One is waking up sweating and feeling hot yourself as well as giving off heat, and the other is what my girlfriend has which is being extreamly hot and giving off heat and yet she complains of being cold and sleeps with the Duvet up to her ears whilst I lay next to her with the covers off as she is giving off so much heat!!
The problem of being hot to touch and yet you feel cold is what my ex also had and she had a extreamly bad underactive thyroid.
I have asked my present girlfriend to get it checked out. But she is also anaemic anyway and she to never drinks enough water. So I am not sure if this has any bearing on the problem or she may have an underactive thyroid she doesnt know about.
With regards to parasites in the body that a couple of posts mentioned. I went for chinese herbal medicine for tiredness and dermatitis they said the same thing it was it was a build up of a fungle layer inside caused by eating dairy products and yeast based products etc. I was given rather EXPENSIVE medicine and told to cut out dairy and yeast based products, whilst it did help my dermatitis I am not sure if the medicine really helped or it was infact just cutting out the above that sorted it. I would try just cutting certain things out of your diet and save some money. Drink plenty of water and allow your liver to do its natural detoxifying of the body.
Bakerdavey also mentioned restless leg sydrome and that you are taking medicine for it, can you tell me what it is and does it work? As the only cure that I can find on-line says the medicine is Rohipnal based!! and can have terrible side effects. It also says doctors are bafailed by it and its not really yet recognised as a real problem.
My restless leg drives me up the wall and I cant cuddle my girlfreind when she is asleep because of the heat and I cant cuddle her always when we are awake as my legs are driving me crazy