People with psoriatic arthritis might not hae obious psoriasis skin findings or they might hae minimal scaly red skin on the scalp, in the bellybutton or between the buttocks.

• 患银屑性关节炎的患者可能没有明显的皮肤癣，或者在头皮、肚脐或臀部有轻微的红色斑疹皮肤。