Total anonychia congenita: a rare heterogeneic disorder.

Total anonychia congenita is a very rare disorder in which all the finger nails and the toenails are absent without significant bone anomalies. This condition is reported to have an autosomal dominant inheritance pattern. There are a variety of syndromes or conditions associated with anonychia congenita. In this study we present a monozygotic twin with isolated anonychia congenita totals. Interestingly there is no family history of anonychia and this condition seems to be caused by a sporadic mutation.