I'm with Burnt on this one. I find applying a heating pad to the affected area can be quite a help in reducing the pain, or having one of those magic bags to wrap around your shoulders/neck can help.

(I also have Multiple Sclerosis, in which most have worsening of symptoms from heat. Heat is my savior in a controlled environment like applying heat compresses when it comes to the pain caused by Trigeminal Neuralgia).

If the heat pads etc don't do the trick, I jump in a nice hot tub of water and soak. This has always helped to reduce my head pain.