The situation of chest skin spots is considered to be due to post-inflammatory hyperpigmentation, age spots and other factors. 1. Post-inflammatory hyperpigmentation: this is an acquired pigmentation disease, usually refers to the skin in acute and chronic inflammation, thus secondary pigmentation symptoms, mainly manifested as local skin hyperpigmentation spots, mainly confined to the parts of the skin with inflammation, especially in the case of sun exposure and other conditions of aggravation of pigmentation. 2. Age spots: seborrheic keratosis, which belongs to benign epidermal tumors, especially in adults over 40 years old, mainly due to skin aging and genetic susceptibility and other factors, occurring in addition to mucous membranes, palms, soles of the feet in addition to any surface skin, such as the neck, head and face, back of the hands, trunk and other places most common. Chest skin spots may also be related to other diseases, it is recommended that patients go to a regular hospital in time, and with the specialist to clarify the specific causes, and then do targeted treatment.