Along with having generalized symptoms of a fever, taking one's temperature with a thermometer can confirm the diagnosis of a fever. A temperature greater than 100.4 F in adults or children is considered a fever.
Different tests may be done by a doctor, such a blood and imaging tests, to determine the cause of a fever and if the cause of the fever needs to be treated.
Fever-induced seizure (febrile seizure), in a small number of children ages 6 months to 5 years
Fever is not a disease but a manifestation of underlying problem, hence we should always find the cause of fever. Conservative management includes cold sponging while medical management includes antipyretics as ibuprofen, Paracetamol.