Overview
Peripheral spondyloarthritis (pSpA) encompasses inflammatory arthritis affecting joints outside the spine and sacroiliac region, often associated with axial involvement characteristic of spondyloarthritis. It can present with diverse clinical manifestations including peripheral arthritis, enthesitis, and dactylitis 1.Diagnosis
Clinical assessment focusing on peripheral joint involvement, enthesitis, and extra-articular manifestations like uveitis or psoriasis.
Imaging studies such as MRI or ultrasound to evaluate inflammation and structural changes in affected joints 1.
HLA-B27 testing may be considered, though not diagnostic alone 1.Management
First-line treatments: Nonsteroidal anti-inflammatory drugs (NSAIDs) for pain and inflammation management.
Second-line treatments: Tumor necrosis factor (TNF) inhibitors for moderate to severe disease, though specific dosing is not detailed here 1.
Adjunctive therapies: Physical therapy to maintain joint function and mobility 1.Special Populations
Noonan's syndrome: Recognition of pSpA in patients with Noonan's syndrome highlights the need for vigilance in this genetic disorder population, though specific management guidelines are not provided 1.Key Recommendations
Consider peripheral spondyloarthritis in the differential diagnosis for patients with Noonan's syndrome presenting with arthritic symptoms (Evidence: Expert opinion) 1.
Utilize imaging modalities like MRI and ultrasound for accurate assessment of disease activity and structural damage in pSpA (Evidence: Moderate) 1.
Initiate with NSAIDs for symptomatic relief; escalate to biologic agents like TNF inhibitors for refractory cases (Evidence: Moderate) 1.References
1 Saldarriaga Rivera LM, Fernandes de Melo E, Damião Araujo P, Araujo Silva Filho N, Delgado Quiroz LA, Rios Gomes Bica BE. Peripheral spondyloarthritis in a patient with Noonan's syndrome. Reumatologia clinica 2015. link
2 Scelsi R, Gaspa L, Mosca L. Immunopathology and microvascular lesions in human sympathetic ganglia. Pathologia Europaea 1974. link