Camille Melchior, French dermatologist, 1797-1866. Gibert disease - a common inflammatory skin disorder presenting as an acute, self-limiting, papulosquamous eruption with a 6- to 8-week duration. Unknown etiology, although most probably infectious. Synonym(s): Gibert pityriasis roseaGibert pityriasis rosea - Synonym(s): Gibert disease