Cutaneous Manifestations in Psoriatic Arthritis
Skin disease in PsA is not a side note to joint management — specific phenotypes (nail, scalp, palmoplantar, inverse) carry their own diagnostic and prognostic weight, and discordant skin/joint responses are a leading driver of complex-to-manage PsA. This review maps the phenotypes, the shared IL-23/IL-17/TNF pathogenesis, and how drug-class selection should follow the cutaneous pattern in front of you, not just the joint count.