SUMMARYThe authors have described two brothers, both affected by epidermolysis bullosa, struck at the same time by poliomyelitis anterior acuta having identical paralytic manifestations concerning the lower limbs and an almost reversed asymmetrical affection concerning the muscular groups of the upper limbs. Owing to the presence of a congenital desease, the Authors have considered the existence in the above mentioned brothers of a particular predisposition also for poliomyelitic infection.

SUMMARYThe Authors have reported five twin-pairs, two of which DZ and three MZ, all affected by poliomyelitic paralysis, affirming the existence of a particular predisposition to this disease and even of a local predisposition in MZ pairs.