eczema (n.) Look up eczema at Dictionary.com
1753, from Greek ekzema, literally "something thrown out by heat," from ekzein "to boil out," from ek "out" (see ex-) + zema "boiling," from zein "to boil," from PIE root *yes- "to boil, foam, bubble" (see yeast). Said to have been the name given by ancient physicians to "any fiery pustule on the skin."