Overview
Pneumonia is an infection of the lung tissue itself, most often bacterial (Streptococcus pneumoniae) but also viral or fungal. It typically follows or complicates another respiratory illness and needs prompt evaluation.
Symptoms to watch for
- Cough producing yellow/green/rust-colored mucus
- Fever, sometimes with shaking chills
- Shortness of breath, especially with exertion
- Chest pain that worsens with deep breaths
- Fatigue and body aches
- Confusion (especially in older adults)
What else could this be?
- Acute bronchitis — no infiltrate on X-ray, milder
- Flu with sinusitis
- Pulmonary embolism — sudden shortness of breath without infection signs
- Heart failure exacerbation
How it's diagnosed
Chest X-ray is the primary test. Pulse oximetry, CBC, and sputum culture may be added. A telehealth clinician can order the X-ray at a lab near you and follow up.
Treatment
Bacterial pneumonia is treated with antibiotics (amoxicillin, doxycycline, azithromycin, or levofloxacin depending on severity and history). Hospitalization is needed for low oxygen, confusion, or high-risk patients.
When to book a visit
Book same-day if a cold or flu has 'turned worse' — new fever, productive cough, or shortness of breath after initial improvement.
Book online todayFrequently asked
Can pneumonia be treated at home?
Yes, most uncomplicated pneumonia in healthy adults is treated with oral antibiotics at home. Hospital care is needed for low oxygen, older age, or comorbidities.
How long does pneumonia last?
Fever usually breaks in 2–3 days of antibiotics; cough and fatigue can linger 2–6 weeks.