Rare diseases · Sign or symptom
Erythematous plaque
HP:0025474
What it means
A plaque (a solid, raised, plateau-like (flat-topped) lesion greater than 1 cm in diameter) with a red or reddish color often associated with inflammation or irritation.
Rare diseases that can present with this26
Very common80–99%
4Common30–79%
14- Carcinoid syndrome
- Chromomycosis
- Cutaneous neuroendocrine carcinoma
- Discoid lupus erythematosus
- Fixed drug eruption
- Glycogen storage disease due to lactate dehydrogenase M-subunit deficiency
- Kaposiform hemangioendothelioma
- Localized dystrophic epidermolysis bullosa, acral form
- Multifocal lymphangioendotheliomatosis-thrombocytopenia syndrome
- Parkes Weber syndrome
- Pemphigus foliaceus
- Pruritic urticarial papules and plaques of pregnancy
- Subcutaneous panniculitis-like T-cell lymphoma
- X-linked dominant chondrodysplasia punctata
The 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: Violaceous plaque
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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.