A fever is a medical condition in which a patient’s core body temperature rises beyond the normal level of 98 to 100 degrees Fahrenheit (36.5 to 37.5 degrees Celsius). Fevers have many different causes, and can be standalone conditions, or a symptom of a more serious underlying condition. Thus, medical attention should be sought if fever symptoms persist or do not respond to treatment. Signs and symptoms of fever include a high temperature, fatigue, loss of appetite, muscle aches, weakness, difficulty concentrating, increased pain sensitivity and lethargy. Fever symptoms can be controlled with over-the-counter pain relievers, particularly acetaminophen and ibuprofen. Cool cloths may be placed on the patient’s forehead, or they may be immersed in lukewarm water or placed in front of a fan to help control body temperature.