Red pimples on the chest, in clinical treatment to find its causative factors to be treated, including the following: First, folliculitis, if due to fungal infection, often only folliculitis papules, not acne, in clinical treatment can be applied topically cypionamide cream, in addition to the application of ketoconazole lotion for external washing treatment, oral drugs can choose fluconazole capsules or itraconazole capsules. If it is caused by bacterial infection, you can apply fusidic acid cream or erythromycin ointment, and take oral tetracycline tablets or minocycline hydrochloride capsules. Secondly, papular urticaria, which is caused by allergy, can be applied with dinaide cream and oral imipramine extended-release tablets.