Coexistence of Acquired Localized Hypertrichosis and Lipoatrophy After Lupus Panniculitis

A 28-year-old woman with lupus panniculitis developed acquired localized hypertrichosis, characterized by the growth of coarse dark hair in areas of deep atrophic scars on her arms and thighs. Despite treatment with chloroquine and later prednisone, the hypertrichosis persisted. The study suggested that the coexistence of fat atrophy and hair growth might share a common pathogenetic mechanism, as seen in other conditions like Lawrence-Seip syndrome. The authors noted that this phenomenon had not been previously documented and was unlikely to be drug-induced, as the hair growth was localized to areas affected by panniculitis.