Pulmonary Alveolar Proteinosis: Causes, Symptoms, and Treatment
Medically reviewed by Harsha Moole, MD, Internal Medicine. Last reviewed: October 2, 2026.
What kind of doctor treats Pulmonary Alveolar Proteinosis?
A pulmonologist, a doctor who specializes in lung diseases, usually treats this condition. Because it is rare, some pulmonologists have extra experience with it, often at larger medical centers. A direct primary care or concierge doctor can be a first stop for an evaluation and can refer you to a specialist when needed.
What it is
Pulmonary alveolar proteinosis is a rare lung disease. The lungs contain tiny air sacs called alveoli, where oxygen passes into the blood. In this disease, a waxy substance called surfactant builds up inside the air sacs and blocks oxygen from moving into the blood. Some people barely notice it. Others feel short of breath doing simple tasks.
Symptoms
Many people feel short of breath, especially when active, along with a dry cough. Some feel tired or have chest discomfort. Less often, people lose weight without trying or get fevers. Sometimes the disease causes pneumonia, which can make symptoms worse quickly.
Causes and who gets it
Doctors group this disease into three types. The most common is autoimmune, meaning the body's defense system attacks a protein that normally clears away used surfactant. The second type comes from another health problem, such as an infection, a blood disorder, or breathing in silica dust. The third type is genetic, passed down in families. The disease is rare and most often found in adults.
How doctors diagnose it
Diagnosis usually starts with a CT scan. Doctors often order blood tests to check oxygen levels and look for the autoimmune type. To confirm the diagnosis, a lung doctor may do a bronchoscopy, using a thin, flexible tube to wash out a sample of the material or look at lung tissue.
Treatment
People with mild symptoms may simply be watched, and the disease can improve on its own. When treatment is needed, the main option is whole lung lavage, a washing of the lungs done under anesthesia. Salt water is run into one lung and then removed, carrying out the extra surfactant. Many people breathe easier afterward. Doctors may also prescribe oxygen therapy and treat lung infections promptly.
When to see a doctor
Anyone with ongoing shortness of breath or a lasting cough should see a doctor. Get medical help right away if breathing suddenly gets worse, if there is chest pain, or if a fever comes with trouble breathing.
How a direct primary care or concierge doctor fits in
A direct primary care doctor is paid a flat monthly fee. A concierge doctor usually charges more and often works alongside insurance. Either type can order scans and blood tests, watch symptoms, treat infections, and refer the patient to a pulmonologist when the diagnosis is suspected or confirmed.
Common questions
Is pulmonary alveolar proteinosis cancer?
No, it is not cancer. It is a buildup of material in the air sacs of the lungs. It does not spread to other parts of the body.
Can it go away on its own?
Sometimes it does. Some people improve without treatment. Others need procedures or medicine, and results differ from person to person.
Is it contagious?
No. You cannot catch it from another person. Lung infections can sometimes happen as a complication.
Can I exercise if I have it?
Many people can stay active. Doctors often encourage movement within what feels comfortable. Your doctor can help you find a safe level of activity for your situation.
Sources
- MedlinePlus - Pulmonary alveolar proteinosis
- National Organization for Rare Disorders (NORD) - Pulmonary Alveolar Proteinosis
Medical Disclaimer
This content is for general educational and informational purposes only and is not medical advice. It is not a substitute for professional medical advice, diagnosis, or treatment, and reading it does not create a doctor-patient relationship. Always seek the advice of your physician or another qualified health provider with any questions about a medical condition, and never disregard or delay seeking professional advice because of something you read here. If you think you may have a medical emergency, call 911 (or your local emergency number) immediately.
