Pneumonia is an infection that causes inflammation in one or both lungs. The tiny air sacs in the lungs may fill with fluid or inflammatory material, making breathing more difficult. Pneumonia can range from mild illness to a life-threatening condition, particularly in older adults, infants, and people with certain underlying health problems.

Knowing the signs of pneumonia can help people recognise when medical assessment is needed.

Common Signs of Pneumonia

Pneumonia symptoms vary according to the cause, the person's age, and their general health. Common signs include:

• Cough, which may produce mucus.

• Fever, chills, or sweating.

• Shortness of breath.

• Chest pain that becomes worse when breathing deeply or coughing.

• Unusual tiredness or weakness.

• Reduced appetite.

• Body aches or headache.

Not everyone develops every symptom. Some people, particularly older adults, may have confusion, unusual drowsiness, or a sudden decline in daily functioning rather than a high fever.

How Pneumonia Can Differ From a Cold

A common cold often causes a runny or blocked nose, sneezing, and a sore throat. Pneumonia may cause more pronounced breathing problems, chest discomfort, fever, and significant weakness.

However, symptoms overlap, and it is not possible to reliably diagnose pneumonia from symptoms alone. Viral infections, influenza, COVID-19, bronchitis, and other conditions can cause similar symptoms.

A healthcare professional may listen to the lungs and recommend a chest X-ray, oxygen measurement, blood tests, or other investigations when appropriate.

Who Has a Higher Risk?

Pneumonia can affect anyone, but the risk of severe illness is higher among adults aged 65 and older, young children, people with chronic heart or lung disease, individuals with weakened immune systems, and people who smoke.

Recent respiratory infections, difficulty swallowing, and certain medical treatments may also increase risk in some individuals.

People in higher-risk groups should seek medical advice early if respiratory symptoms develop or worsen.

When Is Pneumonia an Emergency?

Get emergency medical help if someone has severe difficulty breathing, blue or grey lips or skin, persistent severe chest pain, sudden confusion, collapse, or difficulty staying awake.

Seek prompt medical assessment for worsening breathlessness, a persistent or returning fever, coughing up blood, dehydration, or symptoms that are getting worse instead of improving. Infants, older adults, and people with serious chronic conditions may need assessment sooner.

Treatment and Recovery

Treatment depends on the cause and severity. Bacterial pneumonia may require antibiotics, while antibiotics do not treat viral pneumonia itself. Some viral infections may require specific antiviral treatment. Severe cases may need hospital care, oxygen, fluids, or other support.

Rest, adequate fluids, and following medical instructions can support recovery. Do not use leftover antibiotics or stop prescribed medication without advice from the prescribing clinician.

Recovery time varies. Cough and tiredness can persist after other symptoms improve, so people should return to normal activity gradually and seek advice if recovery is unusually slow or symptoms worsen.

Prevention

Handwashing, avoiding smoking, managing chronic health conditions, and staying up to date with recommended vaccinations can help reduce the risk of pneumonia or severe illness. Vaccination recommendations depend on age, medical history, and local guidance.

Conclusion

Recognising the signs of pneumonia, including cough, fever, chest pain, and shortness of breath, is important for timely treatment. Symptoms can vary, and some people develop subtle warning signs. Severe breathing difficulty, blue or grey skin, or sudden confusion requires emergency attention. When pneumonia is suspected, professional medical assessment is the safest way to determine the cause and appropriate care.