The Flu in the Elderly: Symptoms, Risks & When to See a GP

The Flu in the Elderly: Symptoms, Risks & When to See a GP

Influenza, known commonly as the flu, can be particularly dangerous for older Australians due to a naturally weakening immune system and the presence of chronic health conditions. In seniors, flu symptoms may not be as obvious and can escalate quickly, leading to serious complications like pneumonia or heart failure. The best protection for older Australians is the annual flu vaccination. This guide aims to help caregivers and older adults recognise flu symptoms, understand associated risks, and know when to seek medical attention.

For more information, refer to Everything You Need to Know About the Flu

Why the Flu Can Be More Serious in Older Adults

As people age, their immune systems become less efficient, making it harder to fight off infections like the flu. Additionally, older adults are more likely to have chronic health conditions such as heart disease, diabetes, or respiratory illnesses, which can be worsened by the flu. These factors increase the risk of severe complications, longer recovery times, and hospitalisation.

Flu Symptoms in Seniors

Common flu symptoms include:

• Sudden high fever (38°C or above)

• Dry cough

• Body aches and fatigue

• Sore throat and runny or stuffy nose

• Chills and headache

However, in older adults, symptoms may be less typical:

• Absence of fever

• Confusion or altered mental state

• Loss of appetite

• Unexplained fatigue

These atypical presentations can make it harder to identify the flu early. It's important to monitor for any sudden changes in health and consult a healthcare provider if symptoms arise. 

For a comprehensive list of flu symptoms, visit Flu Symptoms

Signs It’s Time to Call a GP

Seek medical attention if:

• You experience difficulty breathing or chest pain

• Symptoms persist or worsen after a few days

• You feel unusually confused or dizzy

• You have underlying health conditions that could be aggravated by the flu

   

Possible Complications from the Flu in the Elderly

Older adults are at higher risk of serious flu-related complications. Common issues include:

• Pneumonia – a lung infection that can develop quickly.

• Dehydration – due to fever, reduced appetite, or difficulty drinking enough fluids.

• Worsening of chronic conditions – such as heart disease, diabetes, or asthma.

Severe cases may require hospitalisation, particularly if symptoms escalate or underlying conditions worsen.

Older adults are more likely to experience complications like pneumonia, especially if flu symptoms are left untreated. Don’t delay seeking medical care.

Caring for an Older Adult with the Flu at Home

Caring for seniors with the flu involves careful monitoring and supportive care:

• Fluids: Encourage water, broths, or electrolyte drinks to prevent dehydration.

• Rest: Adequate sleep helps the body fight infection.

• Fever management: Use paracetamol if recommended by a GP.

• Symptom monitoring: Track breathing, confusion, appetite, and energy levels.

For older adults living alone, supervision is important. Check in frequently, ensure medications are taken correctly, and seek medical help promptly if symptoms worsen.

Preventing the Flu in Older Adults

The flu vaccine remains the most effective prevention for seniors. Additional steps include:

• Practising good hand hygiene

• Avoiding close contact with sick individuals

• Maintaining a healthy lifestyle to support the immune system

For more information, visit Flu Vaccines for the Elderly

FAQs About Flu in the Elderly

What are the early signs of the flu in older adults?

Early symptoms may include mild fever, fatigue, cough, body aches, or confusion. Sometimes, seniors may not develop a fever, making early recognition harder.

How long does the flu last in seniors?

Flu symptoms typically last 7–10 days, but fatigue and weakness may persist longer, especially in those with chronic health conditions.

Are seniors more likely to get flu complications?

Yes. Older adults are at higher risk of pneumonia, dehydration, or worsening chronic illnesses, particularly if the flu is untreated or medical care is delayed.

How is the flu different from a cold or COVID in older adults?

Flu often develops suddenly with fever, fatigue, and body aches. Colds are milder, with runny nose and sneezing. COVID-19 may overlap with flu symptoms but can also include loss of taste/smell and shortness of breath.

Get Flu Advice and Care at Myhealth Clinics 

If an older adult shows flu symptoms, consult a local Myhealth GP promptly. Myhealth clinics are GP-led and provide care tailored to seniors. Early medical attention can reduce complications and speed recovery.

Book an appointment if the flu is suspected or if symptoms are worsening. Regular check-ins with a GP are especially important for seniors with chronic conditions.