Rare diseases · Sign or symptom
Cheilitis
Inflammation of the lips
HP:0100825
What it means
Inflammation of the lip.
It is associated with many conditions, including megaloblastic anemia from vitamin B12 deficiency, iron deficiency anemia (which in severe cases can lead to Plummer-Vinson syndrome) and oral candidiasis. It can also be a symptom of allergies, such as allergy to Balsam of Peru. Cheilitis can also be caused by taking the (retinoid) drug Isotretinoin. It may also be a pre-malignant lesion for squamous cell carcinoma.
Rare diseases that can present with this17
Very common80–99%
6Sometimes5–29%
7The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.
Part of the broader category
Also called: Red and sore lips
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Start free with EleplanThis page uses the Human Phenotype Ontology (2026-06-23) — Human Phenotype Ontology Consortium, hpo.jax.org. Disease associations from Orphanet (INSERM), CC BY 4.0. Content is educational and is not medical advice.