Sudden red spots on the face may be caused by the following diseases: 1, consider pressure purpura, in the face of a relatively uniform, dense distribution of bruises, bruises, pressure does not fade, is due to crying or vomiting caused by the face of the sudden pressure is too high, capillary permeability increases, red blood cell extravasation. Can not be special treatment, or oral rutin tablets, calcium carbonate D3 tablets, vitamin C capsules, reduce capillary permeability, to achieve the role of the treatment of the disease; 2, consider the possibility of eczema is relatively large, in addition to the small red dots can also appear erythematous spots, and the rash part of the fusion into a slice, accompanied by itchy, mainly due to allergic factors caused by allergic factors, may be a sun allergy or too much spicy and stimulating diet and lead to If you have any questions, please feel free to contact us, we will be happy to help you.