2nd July 2023

An 18-year-old man presents to clinic with a rash on his arms and trunk, which appeared a few days after feeling generally unwell with a fever and myalgia

An 18-year-old man presents to clinic with a rash on his arms and trunk, which appeared a few days after feeling generally unwell with a fever and myalgia. On examination, there were erythematous papules and ring-like lesions, which had a darker peripheral margin and central pallor. There were blisters and erosions in the oral mucosa. He has a past medical history of epilepsy and takes anticonvulsant medication.

What is the most likely diagnosis?

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