The focal dermal dysplasias (FFDDs) are a group of related developmental defects characterized by bitemporal or preauricular skin lesions resembling aplasia cutis congenita. FFFD2 is an autosomal dominant disorder characterized by bitemporal skin lesions with variable facial findings, including thin and puckered periorbital skin, distichiasis and/or absent eyelashes, upslanting palpebral fissures, a flat nasal bridge with a broad nasal tip, large lips, and redundant facial skin. FFDD3 (227260) is characterized by the same facial features as FFDD2, but the inheritance is autosomal recessive (summary by Slavotinek et al., 2013).
For a classification and a discussion of genetic heterogeneity of FFDD, see FFDD1 (136500). [from
OMIM]