The face suddenly red a piece of the following considerations are several possibilities: 1, common type psoriasis, the boundary of the rash is relatively clear, slightly infiltrated, which can be covered with silvery-white scales or greasy scales, due to heredity, smoking, pharyngitis, tonsil inflammation caused by infected foci of the spotted scaly skin disease. 2, dandruff, due to the hemolytic streptococcus bacteria infections caused by the frequent picking and squeezing of the face, resulting in the emergence of local tiny 3, seborrheic keratosis, can appear light red spots, border is not clear, on the fine scales, mainly due to infection, vitamin deficiency, sun exposure allergies and other factors.