[Cockayne syndrome and epidermolysis bullosa dystrophica (Hallopeau-Siemens). Simultaneous occurrence in a family].

A Turkish family with four children is described, two boys suffering from Cockayne's syndrome and a girl from recessive dystrophic epidermolysis bullosa (Hallopeau-Siemens). The outstanding features in the brothers are a pronounced delay in growth which began in both children at the age of about 1.5 years, progeria-like facial features, and a high degree of light sensitivity noticed very soon after birth. The daughter died of septicemia at the age of 4 years. Both diseases are rare and probably the consequence of extremely high consanguinity.