Fever and tiredness but no cough - What could it mean?
Written by Dr Nelson Lau, MBBS FRACGP, GP & Digital Health Specialist Originally published on 10 August 2024. Blog updated on 23 September, 2025.
Contents
Overview
Sometimes you can be running a fever and feeling exhausted, but don't have a cough, and you may be wondering what's happening. There are many causes of fever and tiredness without necessarily having an associated cough, and fever and tiredness are not always linked to a bout of the flu or COVID infection. Australians often Google these symptoms during the winter flu season or after long stretches of work or study when feeling run-down. In many cases, it can be a mild viral illness, dehydration, or even fatigue catching up with you. But sometimes it can signal something more serious, and we will cover those concerns in this article.Understanding the symptoms
Fever is your body's way of fighting off infection or inflammation. Tiredness is often associated with fevers because your immune system is working overtime and uses more energy than usual. Fever and tiredness without a cough are usually not your typical respiratory illness, but rather a viral infection, heat-related illness, or even just exhaustion.What causes tiredness and fever?
While the classic cold or flu often brings on this familiar combination of fever and fatigue, a multitude of other conditions can trigger these symptoms without a cough. Let's explore some of the less obvious possibilities:-
Viral infections
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Urinary tract infections (UTIs)
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Bacterial infections
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Rheumatological conditions
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Medications and vaccines
Self-care tips to make your body stronger
While awaiting test results or while managing your symptoms, there are several proactive steps you can take to support your body's healing process and alleviate discomfort:-
Prioritise rest
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Hydration
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Nourish your body
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Manage stress
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Gentle movement
Experiencing these symptoms? Speak with a doctor within 15 minutes.
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When should you see a doctor in Australia?
- If your fever is 38°C or higher and it's not improving even after having rest and fluids
- If you feel weak, dizzy, or faint, together with having a fever
- If tiredness is severe and ongoing for more than a week
- If you notice other symptoms appear (such as a rash, stiff neck, chest pain, or abdominal pain)
- If you're pregnant, elderly, or have a chronic medical condition
Online medical support in Australia
Telehealth platforms like Hola Health give you quick access to online Aussie doctors from home. A GP can assess your symptoms, provide medical certificates, and order tests if needed. This is especially useful if you're too unwell to visit a clinic in person.How Hola Health can help with fever and tiredness
If you're feeling sick with fever and tiredness but don't have a cough, you can instant consult with an Australian online doctor. Through a telehealth appointment, a doctor diagnoses:- Check your symptoms and make sure it's nothing serious
- The doctor or health practitioner will provide you with a medical certificate if you need time off work or school, if clinically appropriate
- Hola Health GP or health practitioner can prescribe medicine if you need it
- Get referrals for (like blood or urine tests) to find the cause
- Guide you on how to manage your symptoms and when to see a doctor quickly
FAQs
What illnesses cause fever and tiredness without a cough?
Often viral infections, dehydration, heat exhaustion, or even stress-related fatigue. In addition, autoimmune diseases (eg, lupus, rheumatoid arthritis), thyroid disorders, and rarely, certain cancers such as lymphomas or leukaemias.Could it still be the flu or COVID if I don't have a cough?
Yes, early stages of the flu or COVID may sometimes start with fever and tiredness before a cough or any other symptoms appear.Can mosquito-borne viruses in Australia cause these symptoms?
Yes, definitely. Viruses like Ross River Virus (RRV) or Barmah Forest Virus (BFV) can cause fever and fatigue without cough, so it is worth considering these if there has been recent exposure to mosquito bites.When should I worry about persistent fatigue after a fever?
If your tiredness lasts longer than a week or affects your daily life, you should go and see a GP to review your symptoms.How can I tell if it's heat exhaustion or an infection?
Heat exhaustion often follows extended exposure to the hot weather (which is very easy to do in Australia), or after intense physical activity, while infection may come with other symptoms like chills or body aches.When should I see a GP or use telehealth in Australia for fever and tiredness?
If your symptoms don't improve in a few days, or if they worsen suddenly, it's best to check in with a doctor. Connect with a bulk billing GP and get your script online for listed meds in 15 minutes.
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Disclaimer
This blog is for general informational purposes only and does not indicate that Hola Health provides all treatments or preventive measures mentioned. It is not intended to be a substitute for professional medical advice. Always seek the guidance of your doctor or other qualified health professional with any questions you may have regarding your health or a medical condition. For emergencies please immediately contact 000. Any medical topics discussed are intended to educate, not to imply availability through Hola Health.