X-linked recessive inheritance in the Ehlers-Danlos syndrome.

Two families are described in which the Ehlers-Danlos syndrome is apparently transmitted as an X-linked recessive character. The results of tests for the Xg blood groups and for colour vision show that the locus for the Ehlers-Danlos syndrome is not close to that for the Xg groups nor very close to the locus for deutan colour-blindness.The clinical features of this variety of the Ehlers-Danlos syndrome include considerable hyperextensibility of the skin and a bruising tendency.