The cause of red spots on the body should first be clarified, it is recommended to go to the hospital dermatology department for examination, such as allergies, liver function abnormalities and vascular spots, can lead to this situation. Red spots on the face with itchy skin are considered to be allergic skin diseases such as urticaria, which are caused by contact with allergic substances or other factors, and it is recommended to use anti-allergy, blood circulation and blood stasis drugs, combined treatment. You can take oral medication according to the condition, such as levocetirizine tablets, vitamin C, anti-fungal Tong Sheng Wan, moistening and anti-itching capsules then must be used for dialectical classification, external use to be able to use furnace glycolic lotion, to relieve symptoms. If you press the red spot, the red spot is no longer there, and then appears again after lifting the hand, consider it to be a vascular spot. If there is abnormal liver function, previous history of liver disease or hepatitis B virus carrier, patches of erythema may also appear. Due to emotional disorders, improper diet, liver stagnation and fire, resulting in liver fire, fire burning, veins, evil depression, red spots appear, at this time, check the liver function may be abnormal. In addition, erythema around the body, mainly in the lower limbs, and the erythema is nodular, painful when pressed and higher than the skin, this may be nodular erythema, mostly related to infection, and can be treated with a combination of Chinese and Western medicine. Daily, we should forbid to eat spicy and cold food, keep a regular life, eat more fruits with high vitamin content, and eat more alkaline food such as grapes, green tea, tomatoes, cucumber, carrots, nuts and other foods. Exercise moderately. If erythema appears, first of all, pay attention to local cleanliness and hygiene, go to the hospital to find out the cause of the disease and carry out targeted treatment.