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Start free with EleplanIgG4-related thyroid disease
ORPHA:64744Clinical subtype
Also called Riedel disease · Riedel thyroiditis
What it is
A fibroinflammatory disorder of the thyroid gland, occuring more frequently in females, characterized a large, hard thyroid mass, and presenting with pressure symptoms (breathing difficulties and dysphagia) or voice hoarseness and aphonia (impingement of recurrent laryngeal nerve). It can often be associated with extracervical fibroinflammatory disorders such as retroperitoneal fibrosis, primary scleroisng cholangitis and autoimmune diseases such as Hashimoto struma, Addison disease, and Biermer disease.
Key facts
- Prevalence
- 1-9 / 100 000 (annual incidence, United States)
- Age of onset
- Adult
- Inheritance
- Not applicable
- Classified as
- Clinical subtype
Prevalence figures describe populations, not individuals, and are often estimates from a single study. Where the figure is an incidence or a birth prevalence, it says so.
Signs and symptoms
Common30–79%
5Sometimes5–29%
8These ranges are how often a sign appears across everyone diagnosed, not a prediction for one person — most people have some of these and not others. Orphanet also records findings that are specifically absent in this disease; those are in the data but not listed here.
ICD-10 codes
Related health topics
Reached through the ICD-10 categories this disease is filed under, so these describe the broader group rather than this disease specifically.
Cross-references
Orphadata Science: Free access data from Orphanet. © INSERM 1999. Data version 2026-06-23. Available under CC BY 4.0. This is a reference, not medical advice.
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