hydroa

hydroa /hīdrō″ə/ [Gk, hydor + oon, egg] , an unusual vesicular and bullous skin condition of childhood that recurs each summer after exposure to sunlight, sometimes accompanied by itching, lichenification, and scars. It usually disappears soon after puberty. Treatment includes use of sunscreen and avoidance of exposure to sunlight.

Hydroa vacciniforme (du Vivier, 2002)