
Fever
Fever, an increase in body temperature, is a normal part of the body’s immune response. An oral temperature of 100°F (37.8°C) or higher qualifies as a fever. Although most fevers are mild and only uncomfortable for a few days, they can also rise to dangerous levels. Infants with fevers may have a serious infection and should be taken to the hospital. Children are usually fine if they are alert, no other worrisome symptoms are present, and the fever doesn’t last more than three days. For adults, a fever greater than 103°F (39.4°C) is cause to see a doctor. Emergency medical care is needed if the fever is accompanied by other concerning symptoms such as severe headache, rash, light sensitivity, confusion, stiff neck, difficulty breathing, chest or abdominal pain, or persistent vomiting.