Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4111859 | International Journal of Pediatric Otorhinolaryngology | 2014 | 5 Pages |
BackgroundThe periodic fever, aphthous stomatitis, pharyngitis and cervical adenitis (PFAPA) syndrome is an autoinflammatory disease characterized by regularly recurrent fever episodes due to seemingly unprovoked inflammation.ObjectiveTo assess serum 25-hydroxyvitamin D [25(OH)D] concentrations in children with PFAPA syndrome and evaluate longitudinally the effect of wintertime vitamin D supplementation on the disease course.Study designWe have evaluated 25 Italian patients (19 males, 6 females, aged 2.4–5.3 years), fulfilling the Euro-Fever PFAPA criteria. For each patient, we recorded demographic and anthropometric data, clinical manifestations, serum calcium, phosphate, and 25(OH)D. After 400 IU vitamin D supplementation during wintertime, clinical and auxological characteristics, calcium, phosphate, and 25(OH)D levels were re-evaluated. Data were compared with a sex- and age-matched control group.ResultsPFAPA patients showed reduced 25(OH)D levels than controls (p < 0.0001). Regarding the effect of seasons on vitamin D, winter 25(OH)D levels were significantly reduced than summer ones (p < 0.005). Moreover, these levels were significantly lower than in healthy controls (p < 0.005), and correlated with both fever episodes (p < 0.005) and C-reactive protein values (p < 0.005).After vitamin D supplementation, PFAPA patients showed a significantly decreased number of febrile episodes and modification of their characteristics (mean duration of fever episodes, p < 0.05; number of febrile episodes per year p < 0.005).ConclusionsDeficient and insufficient vitamin D serum levels were found in most children with PFAPA syndrome, and hypovitaminosis D might be a significant risk factor for PFAPA flares. However, vitamin D supplementation seems to significantly reduce the typical PFAPA episodes and their duration, supporting the role of vitamin D as an immune-regulatory factor in this syndrome.