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Introduction: Analogies or differences of periodic fever, aphthous stomatitis, pharyngitis, and adenitis (PFAPA) syndrome in children and adults are barely known. The aim of our study was to compare the overall characteristics of a large cohort of patients, both children and adults, diagnosed with PFAPA syndrome., Methods: In the last decade, we identified 120 children and 63 adults with periodically recurring fevers, who fulfilled the criteria for PFAPA diagnosis. The two subcohorts were analyzed according to demographic features, clinical manifestations, laboratory data, and responses to therapies., Results: The mean age of onset was 2.4 ± 1.5 and 19.7 ± 10.3 years, respectively, in children and adults, while attacks occurred every 3.8 ± 0.8 and every 4.3 ± 2.3 weeks, respectively, in children and adults. A higher prevalence of exudative pharyngitis was observed in children (58.8%), and the majority of children had only two cardinal signs during flares. In adults, there was a higher interpersonal variability of the intercritical periods. Inflammatory markers measured during non-febrile periods were normal in children but altered in the totality of adults during febrile periods. A strong efficacy of corticosteroids in controlling the pediatric syndrome was observed, but response rates to steroids were less brilliant in adults. Colchicine and interleukin-1 inhibitors were used in the management of the steroid-resistant adult syndrome. Conversely, tonsillectomy was performed in a very low number of children, but was effective in 60.7% of adults when treated after 16 years. The mean age of disappearance of PFAPA symptoms has been 6.4 ± 2.4 years in children, while only 27% of adults have shown a complete drug-free symptom regression., Conclusions: A linear conformity of the PFAPA syndrome has been observed between pediatric and adult patients. PFAPA symptoms tended to disappear with no sequelae in 94.1% of children, while the disease was still active in almost 3/4 of adults at the time of our assessment.

Alpha-mannosidosis is a rare lysosomal storage disorder that generally presents in early childhood. It is a progressive, highly heterogeneous disease that is difficult to recognize, and a diagnosis is usually reached after referrals to multiple specialists. It is important to understand the challenges faced by patients and their caregiver up to and after a diagnosis of alpha-mannosidosis. In this report, we describe the process of alpha-mannosidosis diagnosis and treatment from the caregivers' and physicians' perspectives. For the caregivers' perspective, the mothers of two patients with alpha-mannosidosis ('Adele' aged 35 years and 'Amedeo' aged 40 years) were interviewed in their homes in Italy, and anonymized transcripts were used to describe their experiences. Adele lived in a large city with access to hospitals and specialized centers and was diagnosed with alpha-mannosidosis before 3 years of age. Amedeo was from a small village and was diagnosed when he was 10-11 years old. In both cases, their mothers sought help from pediatricians and other specialists for recurrent infections and delayed speech and motor development in the first years of their lives, but diagnosis was delayed. Although the diagnostic pathway was concerning and frustrating for her mother, Adele was able to live at home and receive multidisciplinary care and psychosocial support locally, but the transition from pediatric to adult services was difficult. She is currently waiting for access to enzyme replacement therapy. Amedeo had to travel widely and frequently to receive a diagnosis and access supportive treatment. The cumulative morbidity resulting from the delays and poor access to care necessitated long-term residential care. From the physicians' perspective, greater awareness of alpha-mannosidosis is required among healthcare professionals and more support is needed for patients and caregivers, particularly those living in rural areas or small centers.