8 letters · 16 points in Scrabble
noun abnormal redness of the skin resulting from dilation of blood vessels (as in sunburn or inflammation)
originFrom New Latin erythēma, from Ancient Greek ἐρύθημα (erúthēma, “a redness or flush on the skin”), from ἐρυθρός (eruthrós, “red”).
Etymology from Wiktionary, CC BY-SA 3.0