Psoriatic arthritis (PsA) is a heterogeneous inflammatory arthritis that may mimic rheumatoid arthritis with classical deformities. We report a 65-year old female with established psoriasis presenting with inflammatory hand pain, swan neck and Boutonniere deformities, distal interphalangeal joint tenderness, and hallux varum, along with active psoriatic plaques over the interphalangeal joints. This case underscores the importance of recognising psoriatic arthritis manifesting as classical rheumatoid arthritis hand deformities, given its distinctive treatment implications.
Ram Arvind Viswanathan (2026) studied this question.