Bundling a person will only cause the fever to rise. Fevers greater than 106 degrees F are very serious. These high fevers need to be treated in the hospital. Aspirin should not be given to children or adolescents. A rare condition called Reye's syndrome , a severe inflammation of the brain and liver, has been linked to aspirin use in young people, especially in cases of the flu and chickenpox .
All medications have side effects, including allergic reactions and stomach upset.
Other side effects depend on the medication used. What happens after treatment depends on what caused the fever. If the cause of the fever is corrected, the fever generally goes away. Further treatment may not be required. The temperature can be taken several times to monitor the fever.