Ice cold water or tap water to bring fever down?

@agrim94 (3810)
May 6, 2009 4:23am CST
When ever a child or even grown up has a very high fever doctors ask to wet sponge or put a wet cloth on the forehead of the sick person. No one ever ask him what should be temperature of water. Should it be ice cold or normal tap water at room temperature. Which one have you used?