Blushing is a common reaction. it may be a part of social anxiety disorder or social phobia. If blushing, sweating, along with possibly tremors or stuttering occur when you are in a social situation; you may seek the help of a psychiatrist. The other features of social phobia which you may be having are: 1) Fear that people will evaluate you/ judge you in a negative way when you are in a social situation. Such fears are more likely in public speaking, talking to a crowd, or meeting many people at a party or social gathering. 2) Many people have symptoms described in 1) above. But they should be severe enough to cause limitations in your functioning. Or you find the anxiety so severe that you avoid situations completely. This then leads to further social problems. 3) You think this fear is excessive, but seem to have no control over it. There are medications as well as Cognitive Behavioural Therapies (CBT) for dealing with social anxiety. The disorder is sometimes almost a part of your personality, that it stays throughout life. However, medications or psychotherapy will help you deal effectively with the symptoms. Do seek a psychiatrist s opinion on it.