A 45-year-old male has been referred to ED with a painful skin rash which initially started as oral mucosal lesions 3 weeks ago. He has a background of hypertension treated with perindopril for 3 months, but otherwise no other medical history. He reports pain associated with the rash but otherwise looks well and observations are normal.

1. List (3) salient findings on the above image (3 marks) 3 marks

2. What is the MOST LIKELY diagnosis? (1 mark) 1 mark

3. In the table below, name (2) other differentials for the above rash and a clinical feature (either in the history or examination) which aid in diagnosis (4 marks) 4 marks

4. How is the diagnosis confirmed? (1 mark) 1 mark

5. Outline (3) potential complications of this condition (3 marks) 3 marks