Pseudohemophilia

On examining hemostasis, the only consistent abnormal laboratory finding was a prolonged bleeding time, so that the hemorrhagic disorder fell into the group of so-called pseudohemophilias.

The original description of a novel severe bleeding disorder as "Hereditary Pseudohemophilia" by Erik von Willebrand can currently be labelled as von Willebrand disease (VWD) type 3. […] [¶] All five daughters, who died from uncontrolled bleedings, very likely would have been homozygous for the deletion in exon 18 consistent with pseudohemophilia, now called VWD type 3. […] [¶] These data demonstrate that the original family S, described by Erik von Willebrand as pseudohemophilia A, has to be diagnosed as autosomal recessive VWD type 3 caused by a homozygous null mutation (one nuclotide deletion of exon 18).