The namahage's purpose was to admonish laggards, who sit around the fire idly and do nothing useful. One of the refrains used by the namahage in the olden days was .
Namomi signifies heat blisters, or more precisely (
Erythema ab igne or EAI), which in Japanese is , but
hidako is glossed as in medical literature, which corresponds to
Erythema ab igne. Folklorist literature such as Ine mention
hidako, but not the precise medical term for it. A rashlike condition is caused by overexposure to fire from sitting around the dugout
irori hearth. Thus "fire rash peeling" is generally believed to be the derivation of the name
namahage. ==Tradition==