Fever is a temporary increase in body temperature, often a sign that the body is fighting off an infection or illness. It is a common symptom of various medical conditions, ranging from mild to severe. Fever can cause discomfort, chills, sweating, and fatigue. It is important to monitor a fever and seek medical attention if it persists or is accompanied by other concerning symptoms. Treatment for fever may include rest, hydration, and over-the-counter medications to reduce temperature. In some cases, a fever may require medical intervention to address the underlying cause.