What's causing this orange-peel skin on the elbows?

Jason, a 45-year-old plumber, attends regarding his elbows. He reports that a few weeks ago they became painful, tender, swollen and red.

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Dr Paul Muthiah is a GP on the Central Coast, NSW, and medical co-editor at Australian Doctor.

  1. UpToDate, Eosinophilic fasciitis; updated 21 Apr.