What can happen if you have pneumonia for 3 weeks?

If left untreated, pneumonia can continue to worsen over time and can lead to a number of potentially serious complications, including:

1. Spread of infection: The infection can spread from the lungs to other parts of the body, such as the bloodstream, leading to sepsis, a life-threatening condition.

2. Lung abscess: A collection of pus can form within the lung tissue, requiring antibiotics or even surgery to treat.

3. Pleural effusion: Fluid can accumulate in the space between the lungs and the chest wall, interfering with lung function and requiring draining.

4. Acute respiratory distress syndrome (ARDS): Severe inflammation in the lungs can interfere with oxygen exchange, leading to ARDS, a life-threatening condition requiring mechanical ventilation.

5. Organ failure: If the inflammatory response leads to a drop in blood pressure, multiple organs can be affected, causing kidney failure, liver failure, or shock.

6. Death: In severe cases, pneumonia can be fatal, especially in those with weakened immune systems, the elderly, or those with existing respiratory conditions.

It is therefore crucial to seek prompt medical attention and adhere to a prescribed treatment plan to prevent these potential complications from developing.