If the lesion does not itch or has pain, it could be a herald
patch of pityriasis rosea. Pityriasis rosea is an acute, benign, self-limiting skin
rash. Herald patch is a solitary, oval, red colored patch which appears on the chest or abdomen. After 1-2 weeks of this solitary patch, large patches of pink or red, flaky, oval-shaped rash appear on the torso. The rash may be accompanied by low-grade headache, fever, nausea and fatigue and itching.