Is it true that fever is not a sign of infection?

Fever is typically a sign of infection, as it is part of the body's immune response to fight off pathogens like bacteria and viruses. However, fever can also result from non-infectious causes such as autoimmune diseases, heat exhaustion, or certain medications. Therefore, while fever is commonly associated with infection, it is not exclusively indicative of one. It's essential to consider other symptoms and medical history for an accurate diagnosis.