For most children and adults, a fever may be uncomfortable. But it usually isn't a cause for concern. For infants, however, even a low fever may mean there's a serious infection. Fevers generally go away …

In addition to an elevated temperature, you may experience the following symptoms: Chills, feeling cold, shivering and shaking. Body aches and headaches. Fatigue (tiredness). On and off or constant …

Jun 20, 2024 · Doctors generally consider a fever to be an oral temperature of 100 F (37.8 C) or higher. When you have an infection or illness, your body releases substances that tell its temperature …

May 30, 2025 · A person has a fever when their temperature is higher than 100°F (38°C). Learn about fever types, symptoms, causes, and treatments in this article.

Fever is a common symptom of most infections such as colds, flu, and gastroenteritis (also referred to as stomach flu), and thus a risk factor for fever is exposure to infectious agents. Typical infections …

Sep 3, 2025 · Older children and adults should get medical help for an oral temperature of 104 F or higher or if they have accompanying symptoms like rash, severe headache, or stiff neck. Fever is an …

Jul 27, 2025 · Learn what can cause a fever and how to know when a fever can be dangerous.

Fever symptoms vary depending on the type of fever, the temperature, and the cause. A fever in adults can produce different symptoms than children may have. Beyond an elevated body temperature, …

What are the symptoms of a fever? Normal body temperature ranges from 97.5°F to 98.9°F (36.4°C to 37.2°C). It tends to be lower in the morning and higher in the evening. Most healthcare providers …

May 26, 2023 · When your body temperature rises higher than normal, it may be a sign that your body is in the process of fighting off an infection. It’s usually not a cause for alarm. The following temperatures...