Fever

If a fever is left untreated, it can lead to dehydration, particularly if accompanied by sweating, vomiting, or diarrhea. Prolonged high fevers can also cause confusion, seizures, and, in severe cases, brain damage. Additionally, an untreated fever may be a sign of a serious underlying infection or condition that could worsen without medical intervention.

A fever combined with a rash is a major warning sign that requires immediate emergency evaluation. This combination can point to dangerous, time-sensitive conditions like meningitis, sepsis, or a severe allergic reaction. Because the cause of the rash cannot be safely determined at home and some possibilities are life-threatening if not treated rapidly, you should proceed to an emergency center without delay for a prompt and accurate diagnosis.

The most accurate way to take a person’s temperature is by using a digital thermometer in the mouth (oral) or under the arm (axillary), with the oral method generally being more reliable for adults. For infants and young children between newborn and 4 years old, a rectal thermometer is considered the most accurate.

Yes, a fever in an elderly person is a significant concern that requires immediate medical attention. Older adults may not develop a high fever even when they have a serious infection like pneumonia or a UTI. Instead, the primary sign of a dangerous infection may be a sudden change in their condition, such as new confusion, weakness, or dizziness. Due to their higher risk for developing severe complications like sepsis, any fever or sudden change in an elderly person’s health should be evaluated in the ER right away.

If you have a compromised immune system, even a low-grade fever can be a sign of a serious infection that your body may struggle to fight off. Your immune system may not be able to respond effectively, which can allow infections to progress more rapidly. Seeking care in the ER ensures that any potential infections are identified and treated promptly to avoid complications, as your body may not exhibit typical symptoms or react in the same way as someone with a healthy immune system. It’s important to get medical attention early to prevent worsening conditions.