Question

why doctors advise to put strips of wet cloth on the forehead of a person having fever

Answer 1

because the water evaporates and absorb the heat from the body that cause cooling and lowering the  body temperature. that is why the doctor advices to put strips of wet cloth on the forehead of a person having fever.

Answer 2

We know that in case of fever, the temperature of our body increases compare to normal temperature. Therefore the wet strips are advised to put on forehead.

As these strips can absorb heat from the body that ultimately reduces the temperature of the body through the process of evaporation. Since evaporation will absorb heat from body, that will bring the body temperature to the normal value.

Hence doctors advise to “put strips of wet cloth” on the forehead of a person having fever.