fever lifestyle tips for patients

Overview

A fever is a temporary rise in your body temperature. It is usually a sign that your immune system is working to fight an infection. Fever itself is not an illness, but a symptom. It often goes away on its own within a few days.

Fever is very common. Almost everyone will have a fever at some point, especially during childhood. It is one of the most common reasons people see a doctor.

Fever can affect anyone at any age. It is most common in children because their immune systems are still developing and they get more new infections. Older adults and people with weakened immune systems may also be more sensitive to the effects of fever.

Symptoms

Common symptoms

• Feeling hot or cold
• Sweating or shivering
• Headache
• Muscle aches
• Tiredness or weakness
• Loss of appetite
• General discomfort

Symptoms in children

• Being fussy or irritable
• Drowsiness or looking unwell
• Poor feeding or drinking less
• Warm skin or flushing
• Faster breathing or heart rate

Symptoms in older adults

• Confusion or drowsiness
• Less noticeable fever – it may be lower than 38°C (100.4°F)
• Weakness or falling
• Loss of appetite
• Changes in behaviour or activity

Causes

Main causes

• Viral infections such as colds, flu, or COVID-19
• Bacterial infections such as throat infections or urinary tract infections
• Other infections like ear infections or pneumonia
• Inflammatory conditions, such as rheumatoid arthritis
• Some medicines or immunisations
• Heat exhaustion or heatstroke (not an infection)

Risk factors

• Being in close contact with people who are sick
• Having a weakened immune system
• Not having had certain vaccines
• Being very young or very old
• Recovering from surgery or a hospital stay

When to see a doctor

See a doctor urgently if:

• Seek urgent care if you have a fever and a severe headache, stiff neck, rash, or difficulty breathing
• If the person with the fever is a baby under 3 months old, contact a doctor immediately
• For a child with the fever, if they are very drowsy, have a seizure, or become severely dehydrated
• For an adult, if there is confusion, difficulty breathing, or chest pain
• For any fever lasting more than 3 days, contact your GP or local health service

Book a routine appointment if:

• You should speak to your doctor if you have a fever and a chronic disease like diabetes, heart disease, or cancer
• If you have a fever and are pregnant
• If you have repeated fevers with no clear cause
• If you are concerned about your symptoms and want a check-up

Diagnosis

A doctor will ask you about your symptoms and medical history, and they will take your temperature. They will also ask about any recent infections, travel, or contact with sick people to help find the cause.

Tests that may be done

• Physical examination (checking body temperature, throat, ears, and listening to the chest)
• Urine test to check for a urinary tract infection
• Blood tests to look for signs of infection or inflammation
• Sometimes a swab (for example, a throat or nasal swab) to check for specific viruses or bacteria

What to expect at your appointment

Your doctor will ask several questions and examine you. Depending on what they find, they may order tests or advise you to manage the fever at home. Often no tests are needed if the cause is clear, such as a typical cold or flu.

Treatment

Treatment for fever focuses on making you comfortable and helping your body rest and recover. Most fevers are caused by viruses and do not need specific medicines. Antibiotics only help for bacterial infections, so your doctor will decide if they are necessary.

Self-care at home

• Rest as much as possible – stay home from work or school
• Drink plenty of clear fluids like water, soup, or oral rehydration solution
• Dress lightly and keep the room at a comfortable temperature
• Use a cool, damp cloth on your forehead or the back of your neck if it feels soothing
• Avoid alcohol, caffeine, and smoking
• Monitor your temperature and symptoms, but do not become obsessed with the number

Medical treatments

If a bacterial infection is the cause, your doctor may prescribe antibiotics. For viral infections, antibiotics will not work. Over-the-counter pain and fever reducers may help, but you should always ask your pharmacist or doctor for advice, especially for children or if you have other health conditions.

When is surgery considered?

Surgery is not relevant for fever itself. Fever is a symptom, not a surgical condition. Surgery may be needed to treat an underlying cause, such as an abscess or appendicitis, but that is a separate issue.

Living with this condition

While you have a fever, your main job is to let your body recover. Stay hydrated, get plenty of sleep, and avoid pushing yourself. Keep track of how long you have had the fever and note any new symptoms. Call your doctor if you are worried.

Lifestyle tips

• Get at least 7–9 hours of sleep while you are ill
• Take lukewarm showers or baths if you feel uncomfortable – avoid ice-cold water
• Eat small, light meals if you have an appetite
• Avoid strenuous exercise until your temperature has been normal for at least 24 hours
• Keep a glass of water or a bottle of fluid near you to sip throughout the day

Diet and exercise

Stick to simple, easy-to-digest foods such as toast, porridge, soup, or stewed fruit. These are gentle on your stomach. Do not force yourself to eat if you do not feel hungry. Gentle stretching is fine, but save intense exercise until you feel fully recovered.

Mental health and emotional wellbeing

A fever can make you feel frustrated, low, or anxious. These feelings are normal, especially when you cannot do your usual activities. Remember that a fever is temporary. If you feel your mood is getting worse or you are experiencing panic or depression, talk to your doctor or a mental health professional. If you are ever in crisis, contact your local emergency number or mental health helpline.

Prevention

Not every fever can be prevented, but you can lower your risk of the infections that cause fever. Wash your hands regularly, practise good hygiene, and avoid close contact with people who are sick.

Vaccines

Vaccines are one of the most effective ways to prevent fevers caused by certain infections. These include the flu vaccine and childhood vaccines. Follow the recommended vaccination schedule for your area and ask your healthcare provider for details.

Screening programmes

There is no routine screening test for fever. Screening is important for the underlying conditions that may cause fever, such as checking for infections or chronic diseases. Your doctor can advise you based on your health history.

Complications

If left untreated

• In most cases, a fever does not cause harm even if it is not treated.
• However, a very high fever can lead to dehydration because you lose more fluid through sweating.
• In children, fever can sometimes trigger a febrile seizure, which looks alarming but is usually harmless.
• The main risk comes from the underlying infection, not the fever itself. For example, a bacterial infection could spread if not treated.

Long-term outlook

The outlook for most fevers is excellent. With rest, fluids, and time, your immune system will usually clear the infection and your temperature will return to normal. Fever is a natural sign that your body is fighting off an illness. Most people recover fully within a few days. Trust your body and seek medical advice if you are ever unsure.

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