What are the first signs of influenza?

Influenza is a viral respiratory infection that can begin abruptly. People often feel exhausted and feverish, with chills, headache, and widespread muscle or joint pain. A sore throat and cough may follow or appear at the same time. A runny nose can occur, although a blocked or runny nose is not required for influenza. Appetite may fall, and children can also develop nausea or unusual sleepiness. These symptoms overlap with other infections, so the pattern and local clinical context matter more than one symptom alone.

Rest, drink fluids regularly, and use simple meals as tolerated. Stay home while feeling unwell and reduce close contact with others, especially people at higher risk of complications. Follow the label or a clinician's advice for symptom medicines, and avoid giving children medicines that are not suitable for their age. Contact a GP Consultation or use a Telemedicine Consultation if symptoms are severe, worsening, or you have a long-term condition, pregnancy, or another reason for closer monitoring.

Get urgent help for difficulty breathing, chest pain, blue or grey lips, severe dehydration, confusion, fainting, or a child who is unusually difficult to wake. Seek medical advice when fever or cough improves and then becomes worse, or when you cannot keep fluids down. Prompt assessment is also sensible for people with significant medical conditions or a weakened immune system.

Ask whether your symptoms fit influenza or another infection, whether you need an examination or testing, which symptom medicines are suitable, and how long to stay away from work or school. Ask which warning signs should trigger reassessment.