Progressive hemifacial atrophy or Parry-Romberg syndrome: A pediatric case report.

Progressive hemifacial atrophyor Parry-Romberg syndromeis a rare disease, classified as one of the forms of localized morphea or scleroderma. Its cause is unknown. It is characterized by atrophy of the skin, fat, muscles and underlying osteocartilaginous structures that usually affects the face and neck unilaterally, and is associated with neurological symptoms (secondary epilepsy) and involvement of other organs and systems. Its course is slow and progressive and begins in the first two decades of life. Predilection for female sex has been observed. We report the case of a 10-year-old girl diagnosed at the Hipólito Unánue Hospital in Tacna, Peru. Knowledge of this condition is important in the differential diagnosis of localized morpheas or scleroderma.