- Coughing up blood (hemoptysis) or blood-streaked phlegm.
- Severe difficulty breathing, such as struggling to speak without pausing, gasping, or choking.
- Chest pain or pressure that is severe, persistent, or feels like tightness or squeezing.
- A cough that lasts for more than eight weeks, which is considered chronic.
- A high fever (above 100.4°F or 38°C) that does not improve.
- Symptoms that are severe, getting worse, or not improving after a few days.
- Confusion, dizziness, or lightheadedness.
- A bluish tinge to the lips, face, or fingertips.
These signs can
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