Hello. Thank you for writing to us Red to pink colored, dry, asymptomatic patches on chest suggests to me a possibility of pityriasis versicolor. P. versicolor is a superficial fungal infection of skin caused by malasezia furfur and presents as dry, red, brown scaly patches on chest, upper back, shoulders, proximal arms. All these areas are rich in sebaceous glands and this fungus feeds on oil produced by these glands. I suggest a Wet preparation Or KOH examination under the microscope by scraping a small amount of scale from the surface of lesions. KOH preparation would reveal fungal elements, classically known as shagetti and meat ball appearance which is characteristic of P. versicolor. Treatment is with either topical Or oral antifungals and the patches usually resolve in about 2 weeks. I suggest that you visit a dermatologist for a confirmatory diagnosis and appropriate prescription. Regards