Pneumonia

Pneumonia is an infection that affects the lungs, causing inflammation in the air sacs

(alveoli). These sacs fill with fluid or pus, making it difficult for oxygen to reach the blood.

Pneumonia can range from mild to life-threatening, especially in young children, older adults,

or people with weakened immune systems.

What Causes Pneumonia?

Pneumonia can be caused by:

• Bacteria: The most common bacterial cause is Streptococcus

pneumoniae.

• Viruses: Influenza, COVID-19, and other viruses can lead to viral

pneumonia.

• Fungi: Rare, usually in people with weakened immunity.

• Aspiration: Inhaling food, liquids, or vomit into the lungs can cause

pneumonia.

Common Symptoms

Symptoms can develop suddenly or gradually and include:

Symptoms can develop suddenly or gradually and include:

• Cough, often producing phlegm (green, yellow, or bloody)

• Fever, sometimes with chills

• Shortness of breath or rapid breathing

• Chest pain, especially when breathing or coughing

• Fatigue and weakness

• Sweating and clammy skin

• Nausea, vomiting, or diarrhea (sometimes)

In older adults, pneumonia may present with confusion or low energy rather than obvious

respiratory symptoms.

Who Is at Risk?

Pneumonia can affect anyone, but higher risk groups include:

• Young children (under 5 years old)

• Older adults (over 65 years)

• People with chronic conditions (diabetes, heart disease, lung disease)

• Smokers

• People with weakened immune systems

• Those hospitalized or on ventilators

How Is Pneumonia Diagnosed?

Doctors diagnose pneumonia using:

• Medical history and physical examination: Listening to the lungs

with a stethoscope for crackling or wheezing sounds

• Chest X-ray: Confirms infection and shows which parts of the lung

are affected

• Blood tests: Detect infection and determine severity

• Sputum test: Examines mucus from the lungs to identify the organism

causing pneumonia

How Is Pneumonia Treated?

Treatment depends on the cause, severity, and the patient’s overall health.

1. Bacterial Pneumonia

• Antibiotics: Usually taken for 5–14 days, depending on severity

• Antibiotics: Usually taken for 5–14 days, depending on severity

• Symptoms usually improve within a few days, but full recovery may

take weeks

2. Viral Pneumonia

• Supportive care: Rest, fluids, and over-the-counter medications for

fever and pain

• Antiviral medications may be prescribed for influenza or COVIDrelated

pneumonia

3. Severe Pneumonia

• Hospitalization may be needed if oxygen levels are low or breathing is

difficult

• Oxygen therapy, intravenous fluids, and stronger medications may be

administered

• In rare cases, mechanical ventilation is required

Home Care Tips

• Rest and avoid overexertion

• Stay hydrated to thin mucus

• Use a humidifier to ease breathing

• Take prescribed medications exactly as directed

• Avoid smoking or exposure to smoke

Prevention of Pneumonia

• Vaccines: Pneumococcal vaccine and flu vaccine reduce risk

• Good hygiene: Frequent handwashing and covering mouth when

coughing or sneezing

• Healthy lifestyle: Proper nutrition, regular exercise, and avoiding

smoking strengthen immunity

Complications if Untreated

• Severe breathing difficulties

• Sepsis (infection spreading to the blood)

• Lung abscess

• Pleural effusion (fluid around the lungs)

• Organ failure in severe cases

• Organ failure in severe cases

Final Thoughts

Pneumonia is a serious but treatable infection. Early recognition, prompt medical care, and

following the prescribed treatment plan greatly improve recovery and reduce complications.

Vaccination, good hygiene, and a healthy lifestyle are effective ways to prevent pneumonia,

especially in high-risk groups.