A plain-language guide

idiopathic pulmonary fibrosis

What is known, what is still uncertain, and what is actively debated, written plainly, and built only from published medical research.

Early map · 8 sourced statements Every statement names its source Updated 2026-06-12
Please read this first. This guide is a companion to your medical team, not a replacement, and it is not medical advice. Everything here is tied to published research. If something you expected is not here, it almost always means we have not mapped a source for it yet, not that it is unknown to medicine. idiopathic pulmonary fibrosis is an early, growing map, so it will look incomplete on purpose: we would rather show less and have every line be something you can check than fill the page with claims we cannot stand behind. For anything about your own situation, your clinicians hold the full picture. How this guide is built and why.

What it is

Idiopathic pulmonary fibrosis is a chronic, progressive scarring of the lungs of unknown cause. The scarring stiffens the lungs and makes breathing increasingly difficult.

Signs and symptoms

Exertional dyspnea

Breathlessness on exertion is the main symptom and tends to worsen as the lung scarring progresses.

Limited evidenceSource: ORPHA:2032
Evidence ratingweak
Study designontology_import
Confidence (0-1)0.7
Replicationunreplicated
Supporting sourcesPMID:40719115
Notesplain_language confirmed from PMID:40719115 via curation 2026-06-12.
Last reviewed2026-06-12

Honeycomb lung

'Honeycombing', clusters of cystic air spaces seen on CT scans, is a hallmark of the advanced lung scarring in IPF.

Limited evidenceSource: ORPHA:2032
Evidence ratingweak
Study designontology_import
Confidence (0-1)0.7
Replicationunreplicated
Supporting sourcesPMID:37388961
Notesplain_language confirmed from PMID:37388961 via curation 2026-06-12.
Last reviewed2026-06-12

Cough

A persistent dry cough is a common and often troublesome symptom.

Limited evidenceSource: ORPHA:2032
Evidence ratingweak
Study designontology_import
Confidence (0-1)0.7
Replicationunreplicated
Supporting sourcesPMID:40719115
Notesplain_language confirmed from PMID:40719115 via curation 2026-06-12.
Last reviewed2026-06-12

Crackles

Fine crackles that sound like Velcro being pulled apart are often heard at the lung bases through a stethoscope.

Limited evidenceSource: ORPHA:2032
Evidence ratingweak
Study designontology_import
Confidence (0-1)0.7
Replicationunreplicated
Supporting sourcesPMID:40066320
Notesplain_language confirmed from PMID:40066320 via curation 2026-06-12.
Last reviewed2026-06-12

Usual interstitial pneumonia

The characteristic pattern on scans and biopsy is called usual interstitial pneumonia (UIP), which includes honeycomb-like changes in the lung.

Limited evidenceSource: ORPHA:2032
Evidence ratingweak
Study designontology_import
Confidence (0-1)0.7
Replicationunreplicated
Supporting sourcesPMID:37388961
Notesplain_language confirmed from PMID:37388961 via curation 2026-06-12.
Last reviewed2026-06-12

Treatment and management

What the research describes, not a recommendation. Treatment decisions belong with your clinician.

This covers treatments that appear in the published research mapped here. Investigational and experimental therapies are not included, so their absence is a boundary of this map, not a sign they do not exist.

Nintedanib

Nintedanib is an antifibrotic medicine that can slow the decline in lung function in idiopathic pulmonary fibrosis.

Used to help with: Idiopathic pulmonary fibrosis.

Limited evidenceSource: PMID:42279032
The source text this rests on
“In particular, the shift from ineffective anti-inflammatory strategies to the success of nintedanib and pirfenidone in both IPF and non-IPF progressive diseases is discussed.”
An excerpt quoted verbatim from the source named above, shown as recorded. The full sentence is in the linked source.
Evidence ratingweak
Confidence (0-1)0.7
Replicationunreplicated
Notesconfirmed from PMID:42279032 via curation 2026-06-12
Last reviewed2026-06-12

Turn this into questions for your doctor

The hardest part is often knowing what to ask. PatientLead Health helps families turn what is on this page into the right questions for their care team.

Prepare for your appointment with PatientLead Health →

How to read the evidence labels

Widely acceptedSpecialists broadly agree on this.
Strong evidenceBacked by solid, repeated research.
Moderate evidenceReasonable evidence, still being confirmed.
Limited evidenceSome evidence, but not yet convincing.
Early evidenceAn early finding that needs more study.
Experts disagreeResearchers actively disagree about this.

Where this comes from

This guide is built from 2 published source(s). Every claim above links back to one of them. Click any source ID to read the original on PubMed.

ORPHA:2032 · Orphanet/HPO annotations for Idiopathic pulmonary fibrosis
PMID:42279032 · Disease Mechanisms and Therapeutic Advances in Idiopathic and Progressive Pulmonary Fibrosis: From Approved Drugs to Eme