Yes, stress can sometimes cause a fever. When a person is under a significant amount of stress, their body can release stress hormones, such as cortisol, which can cause an increase in body temperature. This increase in body temperature can sometimes be enough to cause a low-grade fever.
However, it is important to note that fever is not typically the only symptom of stress, and there are usually other signs and symptoms present as well, such as muscle tension, headaches, and difficulty sleeping. If you are experiencing a fever and are unsure of the cause, it is important to consult with a healthcare provider to determine the underlying issue and receive appropriate treatment.