Infection related to a catheter inserted in a vein IV catheter infection. Microorganisms and the substances they produce such as toxins are examples of pyrogens formed outside the body. Food and Drug Administration. Fever is an elevated body temperature. Never give aspirin to children under 16 years of age. Paracetamol, ibuprofen or aspirin all work in this way.
Fever is an important sign that someone is ill and a cause should always be established.
Fever in Adults
The average normal body temperature for an adult is When to seek medical attention: Fever in Adults By Allan R. Drugs that can cause an extremely high temperature include certain illicit drugs such as cocaine, amphetamines, or phencyclidineanesthetics, and antipsychotic drugs. When is it a fever? The fever itself is generally harmless and probably helpful.