Non-invasive / psychological therapy should always be considered first in patients who blush as ETS is irreversible and more invasive.
Self help books, hypnotherapy, cognitive behavioural therapy and counseling should all be considered as a non-invasive treatment of facial blushing and erythrophobia. Some patients can find these techniques useful, others may find these treatments ineffective. If you don’t try you wont know. These treatments are offered by psychotherapists.