1st April 2022

A 45-year-old gentleman is brought by the ambulance complaining of fatigue, abdominal pain, anorexia and nausea

A 45-year-old gentleman is brought by the ambulance complaining of fatigue, abdominal pain, anorexia and nausea. Examination of his vital signs reveal a blood pressure 90/75 mmHg, and a temperature of 38.2 C. Physical exam shows non-blanching purpura on his legs and neck. His past medical history is notable for recurrent DVT for which he takes rivaroxaban. Hyperkalaemia and hyponatraemia are also seen from urea and electrolytes.

What is the cause of his presentation?  

Select the SINGLE most appropriate option from the list below. Select ONE option only.