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Fever is a temporary rise in your body temperature, usually because your body is fighting an infection. A normal temperature is around 37°C (98.6°F). A fever is generally considered a temperature of 38°C (100.4°F) or higher.
Key facts
Yes, fever is one of the most common reasons people visit a doctor or a pharmacist. Almost everyone will experience a fever at some point.
Fever can affect people of all ages, but children, older adults, and those with weakened immune systems are more likely to have complications.
Your doctor will ask about your symptoms, medical history, and any recent travel or exposures. They will take your temperature and may check your heart rate, breathing, and other vital signs. The doctor will also examine you for signs of infection (such as redness, swelling, or tenderness).
Treatment depends on the cause of the fever. Most fevers from viral infections do not need specific medical treatment – they go away on their own. The goal is to keep you comfortable and prevent dehydration. For bacterial infections, your doctor may prescribe antibiotics.
Monitor your temperature once or twice a day, especially if you feel unwell. Rest as much as you can, and stay hydrated. Most fevers last 2 to 3 days. If you are caring for a child with a fever, check them regularly and ensure they are drinking enough.
You cannot prevent all fevers, but you can reduce your risk of infections that cause fever. Good hygiene is key.
Vaccines protect against many infections that cause fever, such as flu, measles, and pneumococcal disease. Stay up to date with your vaccinations as recommended by your healthcare provider.
There is no routine screening for fever itself. However, if you have a medical condition that weakens your immune system, your doctor may monitor you more closely.
The vast majority of fevers resolve without any lasting problems. With proper self-care and medical attention when needed, you can expect a full recovery. Even serious infections are usually treatable. If you have any concerns, your healthcare team is there to help.
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Always verify with your doctor
Health guidelines vary by country and region. The information in this article is based on international clinical guidelines but may not reflect the specific guidelines, medications, or practices in your country. Always discuss your health concerns with your own doctor or healthcare provider, and refer to your local national health guidelines where available.
Important notice This information is for educational purposes only. It does not replace professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider about your specific situation. If you are experiencing a medical emergency, call your local emergency services immediately.
This article is educational and is prepared with reference to recognized health information and clinical guidance sources where available. Specific source links may vary by topic.
Last updated: July 9, 2026
Educational note: This information is for education only and is not a diagnosis.
Use it to support, not replace, advice from a licensed clinician.
If symptoms are severe, worsening, or urgent, call your local emergency number or seek emergency care.
The doctor will ask you about the fever pattern, other symptoms, and any medicines you are taking. They may also ask about your vaccination history. Based on the evaluation, they will give you advice on how to manage the fever and whether you need further tests or treatment.
If your doctor finds a bacterial infection, they may prescribe antibiotics. Sometimes antiviral medicines are used for specific viral infections (like flu). In hospital, intravenous fluids may be given if you are dehydrated. Always follow your doctor’s advice – never take antibiotics for a viral infection.
Surgery is not needed for fever itself. If an infection requires surgical drainage (for example, an abscess), that would be treated separately.
Eat light, easy-to-digest foods like soups, toast, or bananas. Avoid fatty or spicy foods. Do not force yourself to eat if you feel sick. Drink at least 8 glasses of water or clear fluids a day. Resume normal exercise only after your fever has completely gone and you feel better.
Having a fever can be worrying, especially if it lasts a long time. Remember that fever is a normal part of fighting infection. If you feel anxious, talk to a trusted friend or your doctor. For children, fevers can be frightening for parents, but most are harmless. Trust your instincts – if you are concerned, seek advice.