ERYTHEMA

erythema

(noun) abnormal redness of the skin resulting from dilation of blood vessels (as in sunburn or inflammation)

Source: WordNet® 3.1

Etymology

Noun

erythema (countable and uncountable, plural erythemas or erythemata)

Abnormal redness and inflammation of the skin, due to vasodilation.

Skin redness from sunburn or chemical irritation

Source: Wiktionary

Er`y*the"ma, n. Etym: [NL., fr. Gr. (Med.)

Definition: A disease of the skin, in which a diffused inflammation forms rose-colored patches of variable size.

Source: Webster’s Unabridged Dictionary 1913 Edition