I don't have RS, at least that I'm aware of, but I've always had trouble staying warm. It doesn't matter what climate I'm in.

Here in New England I'm always cold at night... really cold. This winter I started wearing a little fleece hat in the house and immediately noticed the difference. My hands and feet didn't get as cold and I didn't get the shivers.

Try putting a little warm dry hat on when you come in to help get warm.

*I even slept in mine a couple of nights.