2nd July 2023

A 62-year-old man presents with a rash on his forearm

A 62-year-old man presents with a rash on his forearm (see image below). He tells you that he has been gardening over the past few days and has not been wearing any protective gloves.

Rash on forearm

What is the most likely diagnosis?

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