Is a body temp of 103.5 too high for an adult?

A body temperature of 103.5°F (39.7°C) is considered high for an adult and is classified as a fever. Fevers are typically a sign that the body is fighting an infection or illness, but sometimes can be caused by environmental factors such as heat exhaustion or sunstroke. It is generally recommended to take over-the-counter medications such as acetaminophen or ibuprofen to reduce a fever, unless the fever is causing any serious symptoms. If the fever does not go down and lasts for more than 3 days, it is important to seek medical attention to rule out any underlying medical conditions.