Written on March 24, 2023 by Theresa Vuskovich, DMD. To give you technically accurate, evidence-based information, content published on the Everlywell blog is reviewed by credentialed professionals with expertise in medical and bioscience fields.
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Fever and inflammation go hand in hand. Inflammation occurs when your body is faced with an injury or an infection. Heat, redness, swelling, and pain are the signs of inflammation . Heat can refer to a fever, a systemic elevation of body temperature . So, can inflammation cause fever? Yes, a fever can occur in response to inflammation [1-4]. This article provides insight into fever and how inflammation causes fever.
Fever is an elevation above normal body temperature. The average body temperature is 98.6°F (37°C), but everyone's body temperature varies slightly [2-4]. A person's body temperature is affected by age, medical conditions, location, and time of day [2-4].
You can check your body's temperature in several places, such as your mouth, forehead, ear, or armpits [2,3]. Your temperature is lower in the morning and rises throughout the day as you become active . A fever is classified based on its duration and degree of elevation.
A fever is classified as acute, subacute, or chronic, depending on how long it lasts .
Fevers are also categorized based on the degree of elevation .
Below are some other common causes of fever [2-4]:
Additionally, some conditions include the word “fever.”
Fever blisters: Fever blisters are commonly known as cold sores . They are fluid-filled bumps around the mouth that eventually turn crusty. Herpes simplex virus (HPV) is responsible for fever blisters and can cause a fever .
Hay fever: Hay fever is another name for an allergic reaction to pollen or dust. There is no fever associated with hay fever.
Familial Mediterranean fever (FMF): People of Mediterranean origins, such as Iranians and Italians, are about 50% more likely to get this genetic disorder if they have a family history . People with FMF have a gene mutation that makes their immune system less effective, resulting in recurrent fevers.
Fever of unknown origin (FUO): Someone with a fever of at least 101°F for several weeks without an obvious cause .
A fever does not always indicate a problem. A fever indicates that your immune system is actively fighting an infection rather than allowing it to win. People with low-grade to moderate fevers (acute fevers below 104° F) are generally not in danger unless the person is immunocompromised or experiencing severe fever symptoms .
Fevers can also cause other symptoms. Chills, tiredness, headaches, and muscle aches often occur when you have a fever. These symptoms are generally harmless. However, seek medical attention immediately if you have a fever and experience any of the following symptoms :
Virtual care visits via Everlywell are available to address common conditions associated with fevers, including the flu and UTIs. Additionally, Everlywell's Vitamin D & Inflammation test provides insight into your body's inflammation levels. With Everlywell, you can monitor inflammation over time. Using your test results, your healthcare provider can create a customized care plan for you.