CLINICAL RHEUMATOLOGY, 2025 (SCI-Expanded, Scopus)
ObjectivesThe aim of this study was to describe the cutaneous manifestations of patients with autoinflammatory bone diseases and to evaluate the relationship between cutaneous manifestations, bone involvement, and systemic inflammation in Turkish children.MethodsThis retrospective multicenter study was conducted in nine pediatric rheumatology centers between the years 2013 and 2023 in patients with a diagnosis of autoinflammatory bone disease with cutaneous manifestations. Demographic data, laboratory findings, cutaneous manifestations, bone involvement, and treatments were recorded.ResultsTwo hundred and sixty-nine autoinflammatory bone disease patients were evaluated. Fifty-one patients with cutaneous manifestations (46 CRMO and five Majeed syndrome) were included in this study. The mean diagnostic delay was 16.1 +/- 11.7 months in those with cutaneous manifestations and 25.3 +/- 9.9 months in those with bone involvement (p = 0.02). The most common skin lesions were acne (n = 26), pustules (n = 23), and papules (n = 10). Patients with acne had more frequent male sex and higher ESR and CRP levels (p = 0.01, p = 0.03, and p = 0.04, respectively). Patients with pustules had a younger age at symptom onset and age at diagnosis and higher ESR and CRP levels (p = 0.04, p = 0.04, p = 0.04, p = 0.02, p = 0.03, respectively). In patients with CRMO, the mean time to remission was 2.1 +/- 0.7 years for cutaneous manifestation and 2.9 +/- 1.4 years for bone involvement (p = 0.04).ConclusionSkin lesions may appear before bone lesions in autoinflammatory bone diseases, serving as an important early warning sign for diagnosis. Lesions such as acne and pustules are more common in these conditions and may contribute to the severity of inflammation in autoinflammatory bone diseases.Key Points center dot Skin lesions, most commonly acne and pustules, are frequently observed in autoinflammatory bone diseases.center dot It would be appropriate to closely monitor skin involvement to manage the disease and inflammation.ConclusionSkin lesions may appear before bone lesions in autoinflammatory bone diseases, serving as an important early warning sign for diagnosis. Lesions such as acne and pustules are more common in these conditions and may contribute to the severity of inflammation in autoinflammatory bone diseases.Key Points center dot Skin lesions, most commonly acne and pustules, are frequently observed in autoinflammatory bone diseases.center dot It would be appropriate to closely monitor skin involvement to manage the disease and inflammation.