I cannot add much to the treatments already posted by others. And while I realize this is not the proper forum for products, one needs to be mentioned. A product called Willard Water (also called CAW or Catalyst Altered Water). I burned my arm on an exhaust pipe of a lawn mower, promptly put some Willard Water on it and the pain went away instantly. The wife of a friend had touched a stove burner that had just lost its glow, put Willard Water on it and also went away instantly.
I recommend this to anyone. Lots of uses for it and all that I have personally tried, worked just like they said it would. If interested, check several sites. Lots of variation in prices.
Below is a link to Google's search page. It is well worth having in everyone's medicine cabinet.