The ACR and the Vasculitis Foundation have published their evidence-based recommendations and expert guidance for the management of GCA and Takayasu arteritis. These recommendations address a variety of clinical questions and scenarios including diagnostic testing, imaging, treatments, and surgical interventions. Recommendations for GCA and TAK include support for the use of glucocorticoid-sparing immunosuppressive agents and the use of imaging to identify large vessel involvement. Recommendations for TAK include the use of glucocorticoids as initial therapy.

Mease and colleagues have shown that psoriatic arthritis (PsA) patients with nail involvement have worse disease and outcomes than those without nail psoriasis.