The reason for the red dots on the forehead may be many, including skin diseases, liver diseases, blood diseases and so on. It is recommended that patients go to the hospital in time to identify the cause and treat the problem. 1, skin diseases: some skin diseases such as papules, papules or small blisters, basal flushing, etc. will appear as small red spots on the chest, which may be accompanied by itching and tingling of the skin and similar rashes seen on other parts of the body. 2, liver diseases: when acute hepatitis, chronic hepatitis, liver cirrhosis, etc. lead to liver function damage, the inactivation of estrogen by the liver When acute hepatitis, chronic hepatitis and liver cirrhosis lead to liver damage, the inactivation of estrogen by the liver is reduced, and estrogen in the blood is increased, causing capillary dilation in small arteries, resulting in small red spots on the chest, which may sometimes form spider-like bleeding spots called spider nevi; 3, blood diseases: hemangioma, leukemia and idiopathic thrombocytopenic purpura may cause abnormalities in blood vessels, coagulation factors and fibrinolytic enzymes, resulting in bleeding spots on the skin of the chest, when other parts of the body may also exist The bleeding spots may also exist in other parts of the body at this time, and gradually aggravate and fuse into spots with the disease, and prolonged bruising may form purple patches of skin. Other causes such as endocrine disorders and brittle blood vessels in the elderly may cause red spots on the chest. Patients need to quickly treat the original disease after determining the cause based on their own signs and professional examination results.