- Flu often starts suddenly with fever, body aches, headache, fatigue, sore throat and cough.
- Young children, older adults, pregnant people and those with chronic conditions can develop complications more easily.
- Early antiviral treatment may be considered for some higher-risk patients, so timing of review can matter.
Why this deserves attention
Influenza can be much more severe than a common cold. Learn which people are at higher risk and when breathing symptoms, dehydration or persistent fever needs medical review.
The same symptom can have several causes. Useful clues include how quickly it changed, how severe it is, what comes with it, personal risk factors and whether it is clearly different from your normal baseline.
What to observe
Note the first day of symptoms, highest temperature, breathing effort, fluid intake and whether underlying asthma, heart disease, diabetes or pregnancy is present.
Write down when symptoms happen, how long they last, triggers, changes in normal function and medicines or supplements already taken. A short record often makes a consultation more useful.
Sensible next steps
Rest, fluids and staying home when infectious help recovery and reduce spread. Wear a mask around others when unwell and seek care sooner if you are high risk.
Medical assessment and where TCM fits
A doctor can assess for pneumonia, dehydration or other complications and decide whether antiviral medicine is appropriate.
TCM may be discussed for comfort after medical risk is considered, but it should not replace indicated antiviral treatment or assessment of breathing problems.
TCM and conventional care can sometimes complement each other, but acute red flags, conditions needing imaging or blood tests, and diseases with established evidence-based treatment require diagnosis and safety to come first.
When not to wait
Breathlessness, chest pain, blue lips, confusion, severe weakness, inability to drink or rapidly worsening symptoms require urgent assessment.
Related reading & Singapore resources
This page provides general health education, not an individual diagnosis or emergency plan. Sudden, severe, worsening or red-flag symptoms should be assessed through appropriate conventional medical or emergency care.