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- A fever occurs when the hypothalamus (a sensor area of our brain) increases our body temperature, usually to help “burn off” a viral or bacterial infection. A fever is often accompanied by other symptoms like feeling flushed, sweating, getting chills, muscle aches, and fatigue.
www.buoyhealth.com/learn/fever
Apr 25, 2024 · A fever is often accompanied by other symptoms like feeling flushed, sweating, getting chills, muscle aches, and fatigue. Illnesses that can cause a fever range from the common cold and sore throat to more serious conditions like pneumonia and appendicitis.
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Body temperatures vary slightly from person to person and at different times of day. The average temperature has traditionally been defined as 98.6 F (37 C). A temperature taken using a mouth thermometer (oral temperature) that's 100 F (37.8 C) or higher is generally considered to be a fever.
Depending on what's causing a fever, other fever signs and symptoms may include:
•Sweating
•Chills and shivering
•Headache
•Muscle aches
Infants and toddlers
A fever is a particular cause for concern in infants and toddlers. Call your baby's health care provider if your child is:
Children
There's probably no cause for alarm if your child has a fever but is responsive. This means your child makes eye contact with you and responds to your facial expressions and to your voice. Your child may also be drinking fluids and playing. Call your child's health care provider if your child:
Adults
Call your health care provider if your temperature is 103 F (39.4 C) or higher. Seek immediate medical attention if any of these signs or symptoms accompanies a fever:
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Typical body temperature is a balance of heat production and heat loss. An area in the brain called the hypothalamus (hi-poe-THAL-uh-muhs) — also known as your body's "thermostat" — monitors this balance. Even when you're healthy, your body temperature varies slightly throughout the day. It can be lower in the morning and higher in the late afternoon and evening.
When your immune system responds to disease, the hypothalamus can set your body temperature higher. This prompts complex processes that produce more heat and restrict heat loss. The shivering you might experience is one way the body produces heat. When you wrap up in a blanket because you feel chilled, you are helping your body retain heat.
Fevers below 104 F (40 C) associated with common viral infections, such as the flu, may help the immune system fight disease and are generally not harmful.
Fever or elevated body temperature might be caused by:
•A viral infection
•A bacterial infection
Children between the ages of 6 months and 5 years are at increased risk of a seizure that occurs during a fever (febrile seizure). About a third of the children who have one febrile seizure will have another one, most commonly within the next 12 months.
A febrile seizure may involve loss of consciousness, shaking of limbs on both sides of the body, eyes rolling back or body stiffness. Although alarming for parents, the vast majority of febrile seizures cause no lasting effects.
If a seizure occurs:
•Lay your child on the side or stomach on the floor or ground
•Remove any sharp objects that are near your child
•Loosen tight clothing
You may be able to prevent fevers by reducing exposure to infectious diseases. Here are some tips that can help:
•Get vaccinated as recommended for infectious diseases, such as influenza and COVID-19.
•Follow public health guidelines for wearing masks and social distancing.
•Wash your hands often and teach your children to do the same, especially before eating, after using the toilet, after spending time in a crowd or around someone who's sick, after petting animals, and during travel on public transportation.
•Show your children how to wash their hands thoroughly, covering both the front and back of each hand with soap and rinsing completely under running water.
•Carry hand sanitizer with you for times when you don't have access to soap and water.
•Mayo Clinic Minute: What to do and not do when your child has a viral fever
•Mayo Clinic Minute: Acetaminophen aids with fever, pain
•Fever treatment: Quick guide to treating a fever
•Thermometers: Understand the options
May 22, 2023 · To help determine why you have a fever, your doctor will ask you about: other symptoms such as coughing, abdominal pain, vomiting, diarrhea, or pain when urinating; recent surgeries or injuries; recent vaccinations; new drugs you may be taking; recent travel, particularly travel abroad. How to treat a fever at home. By itself, fever is usually ...
- hhp_info@health.harvard.edu
Sep 17, 2019 · See your doctor if you have a fever that lasts longer than 3 days or if you have other severe symptoms. If you have a chronic condition or have been treated for a serious illness, let...
If you have a fever along with any of the following symptoms, go to your nearest emergency room or call 911. It may be a sign of a serious or life-threatening illness. Pain or tenderness in your belly (abdomen).
Jul 29, 2021 · Feeling feverish or hot may be one of the first signs of having a fever. But sometimes you may feel like you have a fever when you do not. While an occasional feverish feeling isn’t...
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Nov 15, 2023 · A fever can be a sign of several health conditions, which may or may not need medical treatment. The most common causes are infections such as colds and stomach bugs (gastroenteritis)....
