Childhood recurrent parotitis linked to a 28-fold higher hazard of Sjögren's disease
In a 30-year Danish cohort, children with recurrent parotitis later had far higher rates of Sjögren's disease and other autoimmune conditions than matched controls.
Danish researchers used national hospital records from 1994 to 2024 to follow 2915 children with juvenile recurrent parotitis (JRP) and 29,140 matched controls. The cumulative risk of any autoimmune disease was 4.73% in the JRP group versus 3.02% in controls, a hazard ratio of 1.71.
The link was strongest for Sjögren's disease (HR 28.16, though with a very wide confidence interval of 10.14 to 78.18). Connective tissue diseases (HR 3.69) and gastrointestinal diseases (HR 1.55) were also more common. Associations were stronger in females than in males, and significant in those aged 10-17 years.
This is an observational study, so it shows association, not causation. Cases were identified through hospital contacts and described as nonspecific salivary gland disease, likely JRP. The authors suggest the pattern may reflect either a true increase in risk or an early sign of autoimmune disease already under way.
Summary prepared with AI assistance from the published abstract and reviewed by a physician. Not medical advice. Learn more
