What brought on this crater-like lesion?

Tracey, a 55-year-old truck driver, presents with an ulcerative lesion on her right shin.

Test your clinical know-how by taking the quiz below. If you select the wrong answer, have another go — you can try as many times as you like!

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

References:

1. Patient.info; last updated 21 May 2014
2. Dermnet NZ;