Crohn's Disease & Oral Manifestations
Crohn's disease can affect any part of the GI tract — including the mouth. Oral Crohn's manifests as persistent lip swelling, cobblestone mucosa, deep linear ulcers, and pyostomatitis vegetans, often appearing before bowel symptoms. Adults with Crohn's also have higher periodontitis rates, and oral microbiome shifts can predict disease flares.
The Connection
The same immune dysregulation that drives bowel Crohn's affects the oral mucosa. Oral microbiome composition mirrors gut microbiome shifts, and oral lesions can be the first or only sign of Crohn's in some patients.
Why Coordination Matters
Gastroenterologists should examine the mouth at every Crohn's visit, and dentists who see characteristic lesions should refer for GI workup.
What to Watch For
- Persistent lip swelling
- Cobblestone mucosa inside cheeks
- Deep linear oral ulcers
- Pyostomatitis vegetans
Frequently Asked Questions
Can Crohn's affect my mouth?
Yes — oral Crohn's is well-described and may precede bowel symptoms. Persistent lip swelling, cobblestone mucosa, and deep linear ulcers should prompt GI evaluation.