preventing fever

Overview

Fever is a temporary rise in body temperature, usually caused by an infection. It is a normal response from your immune system as it fights off germs.

Fever is one of the most common reasons people visit a doctor or stay home from work or school.

Fever can affect anyone, but young children, older adults, and people with weakened immune systems may need extra attention.

Symptoms

Common symptoms

• Body temperature above normal, usually 38°C or higher
• Sweating or shivering
• Headache
• Muscle aches
• Feeling tired or weak

Symptoms in children

• Fussiness or irritability
• Poor appetite
• Flushed or hot skin
• Unusually tired or sleepy
• Clinging to a parent or caregiver

Symptoms in older adults

• Confusion or drowsiness
• Weakness or unsteadiness
• Loss of appetite
• Rapid heartbeat or breathing
• Less obvious fever, sometimes with a normal temperature reading

Causes

Main causes

• Viral infections such as colds, flu, or COVID-19
• Bacterial infections such as ear, throat, or urinary tract infections
• Inflammatory conditions, like autoimmune diseases
• Heat exhaustion or prolonged exposure to high temperatures

Risk factors

• Being very young or very old
• Having a weakened immune system
• Living in crowded settings
• Not being vaccinated against preventable infections
• Travel to areas with certain infections

When to see a doctor

See a doctor urgently if:

• Fever higher than 40°C
• Fever with a stiff neck or severe headache
• Fever with persistent vomiting or diarrhoea
• Fever in a baby under three months old

Book a routine appointment if:

• Fever lasting more than 48 to 72 hours
• Fever with a mild rash
• Fever with a cough or cold symptoms that get worse
• Fever that keeps coming back

Diagnosis

A healthcare provider will ask about your symptoms, measure your temperature, and do a physical exam. They may look for signs of infection such as a sore throat, ear pain, or skin changes.

Tests that may be done

• Physical exam
• Temperature measurement
• Blood or urine tests if an infection is suspected
• Throat swab or other samples if needed

What to expect at your appointment

Your provider will likely explain the possible cause and suggest ways to manage the fever. In many cases, no specific test is needed and the fever resolves on its own.

Treatment

Treating fever involves dealing with the underlying cause and helping you feel comfortable. Most fevers do not require medicine, but rest and fluids are important.

Self-care at home

• Drink plenty of fluids such as water, clear soup, or oral rehydration drinks
• Get plenty of rest
• Wear light clothing and keep the room at a comfortable temperature
• Use a lukewarm sponge or cloth if you feel too hot
• Avoid heavy blankets or extra layers

Medical treatments

If an infection is causing the fever, a healthcare provider may recommend treatment based on the type of infection. This could include medicines to lower fever or treat the infection, but you should always follow your provider's advice. Never give aspirin to children or teenagers.

When is surgery considered?

Surgery is not needed to treat a fever itself. However, if the fever is caused by a condition such as appendicitis or an abscess, surgery may be required to treat that underlying problem.

Living with this condition

When you have a fever, focus on rest and drinking fluids. Monitor your temperature and how you feel. Most fevers settle within a few days.

Lifestyle tips

• Wash your hands regularly with soap and water
• Avoid close contact with people who are sick
• Cover your mouth and nose when coughing or sneezing
• Clean shared surfaces like doorknobs and phones
• Stay home from work or school until you feel better

Diet and exercise

Eat light, easy-to-digest foods if you feel hungry, such as soup, toast, or bananas. Avoid strenuous exercise until the fever has gone and your energy returns.

Mental health and emotional wellbeing

Feeling unwell can cause worry, stress, or low mood. It is okay to take time to rest and recover. Talk to your healthcare provider if you feel anxious or if the fever lasts longer than expected.

Prevention

You cannot prevent all fevers, but you can lower your chances of getting the infections that often cause them.

Vaccines

Vaccines help protect against many infections that cause fever, such as flu, pneumonia, and other vaccine-preventable illnesses. Ask your healthcare provider about recommended vaccines for you and your family.

Screening programmes

Routine health checks can help identify conditions that may increase your risk of infection. Discuss any ongoing health issues with your provider.

Complications

If left untreated

• Dehydration from sweating or not drinking enough fluids
• Seizures, especially in young children
• Bacterial infections spreading if not treated properly

Long-term outlook

Most fevers are short-lived and resolve without problems. With rest, fluids, and appropriate care, most people recover fully. Seeking medical advice when you are concerned helps ensure the best possible outcome.

Find support

External links open third-party websites. Ruqelo Health is not responsible for external content. Listing an organisation does not imply endorsement.