Woman has Blisters, Scabs on Hands – Let’s Diagnose

A 32-year-old woman visited her doctor concerned about blisters and scabbing that developed on the backs of her hands over the span of two months. On examination, there were scattered vesicles, bullae, crusts, and pink scars over the dorsal hands and wrists. The patient’s medical history was unremarkable. When asked about medication history, she noted that she started taking oral contraceptives approximately four months ago.

Is it hepatoerythropoietic porphyria, systemic lupus erythematosus, polymorphous light eruption, or porphyria cutanea tarda?

Can you diagnose the patient? Use the Differential Builder in VisualDx to help you.