When you have a fever, you generally feel lousy — you might be tired, irritable, flushed, sweaty or achy. But it can be tough to figure out whether you can care for a fever at home or if you need medical attention. It’s even trickier when it’s your child who has a fever, especially a baby or toddler who can’t tell you how they feel.
David Kipp, MD, a pediatrician with Banner Urgent Care, explained more about fevers, what they could mean and what steps you should take if you’re caring for someone who has one.
“Fever is a sign, not a disease,” Dr. Kipp said. A fever tells you that something else is wrong. It’s often a sign of an infection, but other conditions such as autoimmune diseases, cancers and inflammation can also cause fevers. Fevers can affect people differently, depending on their age.
A fever happens when your body temperature goes above 98.6°F (37°C). A higher body temperature makes it harder for viruses and bacteria to survive. So when your body detects a threat, a part of your brain called the hypothalamus raises your body temperature.
Common causes of fevers
Infections are the top culprit when it comes to fevers. “Most infections, especially in children, are caused by viruses, which generally cannot be treated except for making the child comfortable until the virus infection runs its course,” Dr. Kipp said.
But some fevers are caused by conditions that can be treated with antibiotics or antiviral medications, such as:
- Ear infections
- Sinus infections
- COVID-19
- Pneumonia
- Strep throat
- Serious skin infections
- Urinary tract infections
- Influenza
- Meningitis
- Bacterial infections in the blood (sepsis)
Get care right away for a fever along with:
- Ear pain
- Sinus pain
- Deep productive cough
- Sore throat
- Pain or blood with urination
- Chills and body aches during flu season
- Neck stiffness
- Headache
- Trouble breathing
- Seizure
- Persistent vomiting
- Confusion
- Chest pain
- A weakened immune system
What else is going on?
There are a few other things to look at along with a fever:
- Other symptoms: “Fever evaluation should consider the whole child and other symptoms. A playful, smiling infant or young child with a fever who is eating and drinking fairly normally is much less concerning than a lethargic, fussy child who is not eating or drinking well,” Dr. Kipp said.
- How high the fever is: “In older infants and children, the higher the fever, the more likely the child might have a serious infection that could require antibiotics. A general guideline is a fever over 103 to 104 degrees should be evaluated promptly,” Dr. Kipp said (see below for more specific advice based on age).
- Immunizations: “A fever in an unimmunized infant or child could be a sign of a serious infection such as sepsis or bacterial meningitis,” Dr. Kipp said. Immunization prevents these germs from getting into the bloodstream or brain.
How to treat a fever at home
A fever that doesn’t need medical care can still leave you or your child feeling icky. But not all fevers need to be lowered. Mild to moderate fevers may help the immune system work better.
In babies, you might be able to manage a fever at home if they don’t have other symptoms and they are feeding well and alert. In children and adults, you may be able to manage fevers with mild symptoms like cough, runny nose or mild body aches at home.
Here are some steps you can take to help you or your loved one stay comfortable and hydrated:
- Drink plenty of fluids to prevent dehydration. In babies, that may mean breast milk or formula. Older children and adults may want water, herbal tea, diluted juice, clear broth, cool drinks or popsicles. Electrolyte solutions can help you stay hydrated. Avoid drinks with caffeine or alcohol, since they can dehydrate you.
- Dress lightly, apply cool, damp cloths to the forehead and take lukewarm baths.
- Encourage plenty of rest to help fight off infection.
- Avoid strenuous activities that can raise body temperature.
- If you need to lower the fever with medication, use acetaminophen (Tylenol) or ibuprofen (Advil or Motrin) as directed by a health care professional. Use infant, children or adult types of over-the-counter (OTC) medications based on the age and weight of the person with the fever. “Avoid aspirin under age 18 and ibuprofen under age 6 months,” Dr. Kipp said. Aspirin can cause Reye's syndrome in children. Ibuprofen is more likely to cause side effects in young babies.
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