Cryptogenic Organizing Pneumonia (COP) Symptoms, Causes and Risk Factors | American Lung Association

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Cryptogenic Organizing Pneumonia (COP) Symptoms, Causes and Risk Factors

What Are Symptoms of COP?

The most common symptoms of COP are:

  • Persistent (2-4 months), nonproductive cough
  • Low-grade fever
  • General feeling of not feeling well (malaise)
  • Shortness of breath
  • Loss of appetite
  • Weight loss

What Are Risk Factors?

The cause of COP is unknown. Men and women are equally affected and the average age of someone diagnosed with COP is 50 to 60 years old.  A condition similar to COP may be occur as a side effect of certain medications.

When to See Your Doctor

The faster you get treatment, the faster you will see improvement in symptoms. This is especially true for the very young, for people older than 65 and for anyone with other long-lasting (chronic) health problems, such as asthma. You should consult with your healthcare provider if you have a persistent (2-4 months), nonproductive cough, or shortness of breath that does not go away.


    This content was developed in partnership with the CHEST Foundation, the philanthropic arm of the American College of Chest Physicians.


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