Erythrophobia or Ereuthrophobia or Erytophobia
Erythrophobia: An abnormal and persistent fear of blushing.
Sufferers of erythrophobia experience undue anxiety even though
they realize their fear is irrational. Their anxiety results from
worry about being the focus of attention and the subject of
embarrassment. Attempts to suppress blushing often have the
opposite effect. Sufferers of erythrophobia tend to avoid social
gatherings and workplace projects that require them to interact
with, or speak before, groups of co-workers.