How Dangerous Is Fever? Find Out Here.

What Is A Fever

A fever is a temporary rise in body temperature. It's one part of an overall response from the body's immune system. A fever is usually caused by an infection.

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 within a few days. A number of over-the-counter medications lower a fever. But you don't necessarily need to treat a fever if it's not causing discomfort.

Symptoms

Body temperatures vary slightly from person to person and at different times of the 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
• Loss of appetite
• Irritability
• Dehydration
• General weakness

Taking a temperature

To take a temperature, you can choose from several types of thermometers, including oral, rectal, ear (tympanic), and forehead (temporal artery) thermometers.

Oral and rectal thermometers generally provide the most accurate measurement of core body temperature. Ear or forehead thermometers, although convenient, provide less accurate temperature measurements.

In infants, a rectal temperature, if doable, is somewhat more accurate. When reporting a temperature to your health care provider, give both the reading and the type of thermometer used.

When to see a doctor

Fevers by themselves may not be a cause for alarm — or a reason to call a doctor. Yet there are some circumstances when you should seek medical advice for your baby, your child, or yourself. Lafiya Telehealth connects you with specialist doctors online. Purchase the Lafiya TytoHome medical kit for tests like this. Be proactive with your health.

Infants and toddlers

A fever is a particular cause for concern in infants and toddlers. Call your baby's healthcare provider if your child is:

• Younger than 3 months old?and has a rectal temperature of 100.4 F (38 C) or higher.
• Between 3 and 6 months old?and has a rectal temperature higher than 102 F (38.9 C) or has a lower temperature but seems unusually irritable, sluggish, or uncomfortable.
• Between 7 and 24 months old?and has a rectal temperature higher than 102 F (38.9 C) that lasts longer than one day but shows no other symptoms. If your child also has other signs and symptoms, such as a runny nose, cough, or diarrhea, you can call sooner.

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:

• Is listless, confused, or has poor eye contact?with you.
• Is irritable, vomits repeatedly,?has a severe headache, sore throat, stomachache, or other symptoms causing a lot of discomfort.
• Has a fever after being left in a hot car.?Seek medical care immediately.
• Has a fever that lasts longer?than three days.
• Has a seizure?associated with the fever? Call a doctor if the seizure lasts more than five minutes or if your child doesn't recover quickly.

Ask your child's healthcare provider for guidance in special circumstances, such as a child with immune system problems or with a preexisting illness.

Adults

Call your healthcare 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:

• Severe headache
• Rash
• Unusual sensitivity to bright light
• Stiff neck and pain when you bend your head forward
• Mental confusion, strange behavior, or altered speech
• Persistent vomiting
• Difficulty breathing or chest pain
• Abdominal pain
• Pain when urinating
• Convulsions or seizures

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Causes of fever

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
• Heat exhaustion
• Certain inflammatory conditions such as rheumatoid arthritis — inflammation of the lining of your joints (synovium)
• A cancerous (malignant) tumor
• Some medications, such as antibiotics and drugs used to treat high blood pressure or seizures
• Some immunizations, such as diphtheria, tetanus and acellular pertussis (DTaP), pneumococcal or COVID vaccine

Complications

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
• Hold your child to prevent injury
• Don't place anything in your child's mouth or try to stop the seizure
• Call 911 or your local emergency number if a seizure lasts more than five minutes or your child doesn't appear to recover well after the seizure
• Get an emergency room or urgent care services if it's your child's first febrile seizure.

If your child doesn't need emergency care, see your child's healthcare provider as soon as possible for further evaluation.

Prevention

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.
• Try to avoid touching your nose, mouth, or eyes,?as these are the main ways that viruses and bacteria can enter your body and cause infection.
• Cover your mouth when you cough and your nose when you sneeze?and teach your children to do the same. Whenever possible, turn away from others and cough or sneeze into your elbow to avoid passing germs along to them.
• Avoid sharing cups, water bottles, and utensils?with your child or children.

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