Chest has a small red spot causes to consider the following aspects: 1, solar dermatitis: in the hot summer after ultraviolet radiation, in the chest appeared red spots, pimples, accompanied by itching, serious cases will appear blisters, peeling phenomenon, this is a kind of allergic skin disease. In the treatment can be oral compound glycyrrhizin tablets and imipramine slow-release tablets, topical drugs can be applied to the application of mometasone furoate cream and urea Vitamin E cream mixed topical, and at the same time in the out of the need to apply sunscreen or isolation cream, avoid spicy and irritating food. 2, Malassezia folliculitis: mainly due to the follicle of Malassezia caused by the sebaceous gland of the hair follicles of the chronic inflammatory skin diseases, in the chest appeared a red papule, Erythema, accompanied by a slight tingling sensation. In the treatment, you can apply sulfur soap to wash the skin, you can also use Ekang Beisong cream, in the treatment period you need to wear cotton underwear, pay attention to personal hygiene, take a shower. 3, vascular nevus: mainly due to the aging of the skin after the chest appeared soft red papules, not accompanied by pain, itching, in the treatment of the laser can be applied. Therefore, for small red spots on the chest, it is recommended that patients go to regular hospitals, under the guidance of dermatologists for appropriate treatment.