1st April 2022

A 45-year-old gentleman presents with a 2-week period of itchy rashes over his trunk and upper limbs

A 45-year-old gentleman presents with a 2-week period of itchy rashes over his trunk and upper limbs as shown below. He states that he went on a trip to Thailand and returned with malaria a month ago. He is being treated for this using hydroxychloroquine. What is the most likely cause of this clinical picture? 

Image – Wikimedia commons

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