A 31-year-relator came to the clinic complaining of a forehead rash that is not resolving. It started gradually seven months and is getting worse. It is not painful, and she has not noticed a similar lesion anywhere else. She does not recall any specific trigger. She is not taking any medication and has no prior history of skin rash or allergies. Her temperature is 36.8° C, blood pressure is 124/82 mm Hg, and pulse is 80/min. Physical examination revealed a red annular plaque lesion with a clear border, central clearing and dry scale at the periphery, as shown in the image. Which of the following is the most likely diagnosis,