Red spots on the chest that do not hurt or itch, consider the following conditions: 1. Folliculitis: is an infectious skin disease caused by Propionibacterium acnes infection. There can be follicles consistent with inflammatory papules as well as pustules. In clinical treatment, you can apply topical clindamycin phosphate gel, or mupirocin ointment for treatment. 2, eczema: eczema is mainly caused by allergies, which may be caused by over-eating beef and mutton, seafood and other hair products. It is usually itchy, sometimes painless, and can be treated with oral levocetirizine hydrochloride capsules and topical glyburide lotion. 3. Herpes zoster: It occurs mainly on the chest unilaterally, usually with clusters of red spots that are not accompanied by pain and no itching, especially at the initial onset. It can be treated with oral valacyclovir hydrochloride granules and topical acyclovir ointment for application.