Roger was booked into your clinic by the duty doctor, who requested you review his skin. Roger explained that he first noticed some red bumps and discolouration, as well as, crusting of his skin four days ago. It is mainly on his neck and trunk and is not itchy. Last night, his wife also noticed a larger salmon coloured circular lesion on his lower back. He is otherwise well in himself and has no previous dermatological history. Roger hasn’t used any new creams/washing powder/clothes or spent any time in the sun. Examination reveals a widespread symmetrical maculopapular rash with collarette scaling. The larger patch identified by Roger’s wife is like the other lesions but larger (5cm diameter).
Given the likely diagnosis what is the most appropriate treatment?