Hyperpigmented patches with thickened skin

Jasmine, a 38-year-old woman, presents with a three-week history of hyperpigmented patches on her back, which were initially erythematous and associated with pruritus.

Each week, How to Treat publishes a clinical picture quiz.

The quiz has no CPD points attached, it's just for fun.

Have an interesting clinical picture quiz? Click here to email the editor. We pay $200 for each quiz.

Take the quiz below, see how you fare against your peers and share your