AKT-0047

A 32-year-old woman presents to the General Practice Surgery with multiple skin lesions that she has noticed over the past few weeks. She is a single mother and works as a waitress, and has a long history of smoking and poor engagement with health and social services.
On examination, she is overweight with a body mass index (BMI) of 30 kg/m2 (normal range: 20-25 kg/m2), with obvious cigarette burns on her arms. She has multiple small (ranging from 2-12 mm in diameter), flat, purple bruise-like lesions across her chest, back and arms.
What causative agent is associated with the most likely underlying diagnosis?