any skin condition characterized by red vesicular areas.
Origin of hydroa
< New Latin < Greek hídrōia (plural) heat spots (literally, sweat eggs), equivalent to hidr(ṓs) sweat + -ōia, plural of ōión egg; -y- of New Latin < hydr- hydr-1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
A vesicular eruption, especially of the skin.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.