If your child has a very high fever, and your doctor recommends it, then the best form of treatment is usually a child safe version of ibuprofen or paracetamol. Never use aspirin, as this can lead to a dangerous condition known as Reye’s syndrome.
Cool baths are sometimes recommended to lower a very high fever in children. However, the operative word is cool. Don’t put your child into a very cold bath, as this can cause chills, which will only result in the fever worsening. Rather use luke warm water, and avoid adding any alcohol or other quick evaporating substances, as these can also result in too rapid cooling.
Instead of a bath, you could opt for a cool, damp cloth or sponge bath, both of which reduce the fever gradually, and prevent shivering. Dress your child in cool clothes, and monitor his fever regularly.