Blush, blush, suffocate, embarrass it, ashamed, Redden the face for one more normal blood flow. This unconscious phenomenon has psychological causes, and can denote uncertainty, embarrassment, stress, feelings of guilt or of rejection, fear of not to make the cut before others, which often is only a subjective feeling. Some people are chronic and sometimes leads to ereutofobia or a eritrofobia, a type of social phobia, fear of obsessive and irrational to Redden in public, which tends to provoke great anxiety. There are pharmacological, psychological and surgical therapies.