Tags: Disease.
Parry–Romberg syndrome (also known as progressive hemifacial atrophy) is a rare neurocutaneous syndrome characterized by progressive shrinkage and degeneration of the tissues beneath the skin usually on only one side of the face (hemifacial atrophy) but occasionally extending to other parts of the body. An autoimmune mechanism is suspected and the syndrome may be a variant of localized scleroderma but the precise etiology and pathogenesis of this acquired disorder remains unknown.