History A 39-year-old patient presented with a rash of relatively sudden onset, which initially affected her chest and arms and then spread to her back. She had noticed that the eruption started as small red spots that were dry and scaly, which then spread out in a ring shape. The rash is asymptomatic. She has no previous history of skin problems Examination There was an erythematous eruption predominantly affecting her face, neck, trunk, and proximal limbs. The lesions were annular in appearance, sharply defined with an overlying surface scale.
The lesions displayed central regression and coalesced to give a polycyclic appearance. Her scalp nails and mucosae were normal. What is your diagnosis for this patient? (Answer is posted in the comment section below!) *This image-based patient case is from the Editorial Team of Docplexus and is meant for educational purposes only.
