There are several possibilities for small red bumps on the chest: 1. It may be folliculitis, which mainly appears as folliculitis papules, pustules and pimples. In clinical treatment, acne can be treated with adapalene ointment and benzoyl peroxide gel. If there are small pustules and folliculitis papules, you can apply topical clindamycin phosphate gel, Fuqing gel, fusidic acid ointment, compound polymyxin B ointment. 2. Malassezia folliculitis, mainly caused by fungal infection, you can apply topical terbinafine hydrochloride gel, terbinafine hydrochloride spray, clotrimazole ointment, luliconazole cream. 3. Prickly heat, mainly too hot, and sweating is not smoothly The main reason for this is that it is too hot and the sweating is not smooth.