What is a common symptom of a possible infection?

Increased body temperature, also known as fever, is a common symptom indicative of a possible infection. When the body detects an infection, the immune system responds by raising the body's temperature as a defense mechanism to create an environment less favorable for pathogens, such as bacteria and viruses, to thrive. This response is part of the body's natural healing process and helps to mobilize immune cells to fight off the infection. While consistent low energy, dehydration, and stomach ache may be associated with various health issues, they are not specific indicators of an infection like increased body temperature is. Therefore, an elevated body temperature serves as a clear sign that the body is responding to an underlying infection.