The phrase "hectic flush" typically describes a reddening or blushing of the face due to stress, anxiety, or physical exertion. Synonyms for this term might include "blush," "flush," "fret," "worry," "anxiety," "tension," or "frustration." Some other options might include "flushed cheeks," "red-faced," "blushing countenance," or "heated complexion." Other possible phrases that could replace "hectic flush" might include "flustered appearance," "agitated countenance," or "nervous flush." These words and phrases can help convey a range of emotions and physical reactions, from embarrassment and mild discomfort to intense stress and exhaustion.