A Potential Link Between Outcome of Periodic Fever, Aphthous Stomatitis, Pharyngitis, Cervical Adenitis (PFAPA) Syndrome in Children and Breastfeeding: A Retrospective Single-Center Cohort Snapshot

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Abstract

Background/Objectives: Periodic fever, aphthous stomatitis, pharyngitis, and cervical adenitis syndrome, often referred to as PFAPA syndrome, may enigmatically recur for an undetermined time in affected children: a potential reason to explain its recurring pattern for an unpredictable period or its self-limitation is currently unknown. We explored the relationship between different general, demographic, clinical, and laboratory features of PFAPA children and disease evolution over the course of a decade. Methods: We have retrospectively screened 150 Italian children with a history of PFAPA syndrome attending the Outpatients Clinic of Pediatric Rheumatology in our Institution during the period 2014–2024, all without any recognized chronic diseases: 88 males, 62 females, mean age at onset of 2.5 ± 1.7 years, age range of 0.3–9.4 years, and mean age at diagnosis of 4.5 ± 2.0 years. The whole cohort of PFAPA patients had been followed up for a median period of 5 years (IQR: 4–7). Results and Conclusions: After dividing patients into two groups based on either the disappearance or persistence of PFAPA symptoms during follow-up, we found that positive family history of recurring fevers, cervical lymphadenopathy, arthralgia, myalgia, and breastfeeding for more than 6 months were associated with the disappearance of febrile attacks for at least six months. Performing a multivariate analysis adjusted for sex and age, we found that only breastfeeding duration longer than 6 months and higher education level of PFAPA patients’ mothers were independently associated with the resolution of PFAPA symptoms.

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