Pneumocystis pneumonia

From Food & Medicine Encyclopedia

Editor-In-Chief: Prab R Tumpati, MD
Obesity, Sleep & Internal medicine
Founder, WikiMD Wellnesspedia &
W8MD's weight loss doctor NYC
Philadelphia GLP-1 weight loss and GLP-1 clinic NYC

Pneumocystis pneumonia
Micrograph of Pneumocystis jirovecii in lung tissue
Synonyms PCP, Pneumocystosis
Pronounce N/A
Specialty N/A
Symptoms Cough, fever, shortness of breath, chest pain
Complications Respiratory failure, pneumothorax
Onset Gradual
Duration Weeks to months
Types N/A
Causes Pneumocystis jirovecii
Risks HIV/AIDS, immunosuppressive therapy, organ transplantation
Diagnosis Chest X-ray, CT scan, sputum culture, bronchoalveolar lavage
Differential diagnosis Bacterial pneumonia, tuberculosis, fungal infections
Prevention Prophylactic antibiotics (e.g., trimethoprim/sulfamethoxazole)
Treatment Antibiotics (e.g., trimethoprim/sulfamethoxazole, pentamidine)
Medication Corticosteroids for severe cases
Prognosis Variable, depends on underlying conditions
Frequency Common in HIV/AIDS patients
Deaths Significant if untreated


Pneumocystis pneumonia (also known as PCP) is a form of pneumonia, an inflammatory condition of the lung affecting primarily the microscopic air sacs known as alveoli, that is caused by the yeast-like fungus Pneumocystis jirovecii. CT of bilateral pneumothoraces by pneumocystis pneumonia cysts

Signs and symptoms[edit]

The most common symptoms of PCP are cough, fever, and difficulty breathing. Other symptoms can include chills, night sweats, chest pain, and fatigue.

Cause[edit]

PCP is caused by the yeast-like fungus Pneumocystis jirovecii. It is not known exactly how this organism is spread, but it is believed to be airborne.

Diagnosis[edit]

Diagnosis of PCP can be challenging, as the symptoms are similar to those of other forms of pneumonia. The diagnosis is usually confirmed by identifying Pneumocystis jirovecii in a sample of lung tissue or fluid.

Treatment[edit]

Treatment for PCP typically involves a combination of antibiotics and corticosteroids. The specific medications used may vary depending on the severity of the infection and the patient's overall health.

Prognosis[edit]

With treatment, most people with PCP can recover. However, the condition can be life-threatening, particularly in those with weakened immune systems.

Prevention[edit]

Prevention of PCP involves taking steps to avoid exposure to Pneumocystis jirovecii and to strengthen the immune system.

See also[edit]

Medical Disclaimer: WikiMD is for informational purposes only and is not a substitute for professional medical advice. Content may be inaccurate or outdated and should not be used for diagnosis or treatment. Always consult your healthcare provider for medical decisions. Verify information with trusted sources such as CDC.gov and NIH.gov. By using this site, you agree that WikiMD is not liable for any outcomes related to its content. See full disclaimer.
Credits:Most images are courtesy of Wikimedia commons, and templates, categories Wikipedia, licensed under CC BY SA or similar.