Facial blushing is a normal healthy physiological response. The problem occurs when this blushing response creates feelings of anxiety which in turn fuels the blushing which in turn fuels the anxiety etc.
Also, some people suffer from blushing much more than others, having built, unwittingly, ‘conditioned reflexes’ over the years. Sometimes the blushing is situational, such as when the person has to speak in front of groups of others, or feels that they are ‘on the spot’. Sometimes a person will often blush even with just their immediate family.
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