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Pneumocystis Jiroveci Pneumonia

Medically reviewed by Drugs.com. Last updated on Oct 6, 2024.

What is Pneumocystis jiroveci pneumonia (PJP)?

PJP is a lung infection caused by the Pneumocystis jiroveci fungus. PJP is most often seen in people with a weak immune system. PJP is an opportunistic infection. This means that when your immune system is not working well, it cannot fight off the fungus.

What causes PJP?

You may have been born with the fungus, but only get sick when your immune system becomes weak. You may get the germs that cause PJP from other people, or from your surroundings. People with healthy immune systems may get PJP germs and have no symptoms or problems. Any of the following may increase your risk for PJP:

What are the signs and symptoms of PJP?

If you have AIDS, you may have worsening breathing problems or fast breathing. You may have a worsening cough with or without mucus. You may also have a fever, chills, weakness, or fatigue. If you do not have AIDS, you may have any of the following:

How is PJP diagnosed?

Your healthcare provider will ask about your medical history. He or she will do a physical exam and tests to check for other medical conditions. You may also need any of the following:

How is PJP treated?

If you have other medical conditions and poor health, you will need to stay in a hospital for treatment. Your healthcare provider will treat conditions that weaken your immune system. You may need to stop taking certain medicines or getting treatments that weaken your immune system. You may need any of the following:

What can I do to prevent infections?


When should I seek immediate care?

When should I call my doctor?

Care Agreement

You have the right to help plan your care. Learn about your health condition and how it may be treated. Discuss treatment options with your healthcare providers to decide what care you want to receive. You always have the right to refuse treatment. The above information is an educational aid only. It is not intended as medical advice for individual conditions or treatments. Talk to your doctor, nurse or pharmacist before following any medical regimen to see if it is safe and effective for you.

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