Marie-Unna Hereditary Hypotrichosis

Marie-Unna type of hereditary hypotrichosis is a rare autosomal dominant disorder that has a distinctive type of hair loss pattern that varies with child's age. It is characterized by sparse or absent hair at birth with regrowth of coarse, wiry twisted hair from childhood, followed by progressive loss on approaching puberty. We report a 12-year-old male child with characteristic clinical features suggestive of hereditary hypotrichosis of Marie-Unna type.