Blood, 1946, Vol. 1, No. 6, pp. 504-533.
© 1946 American Society of Hematology, Inc.
PSEUDOHEMOPHILIA
S. ESTREN M.D.1,
L. SANCHEZ MÉDAL M.D.1, and
WILLIAM DAMESHEK M.D.1
1 Blood Laboratory of the J. H. Pratt Diagnostic Hospital and Boston Dispensary and the
Department of Medicine, Tufts College Medical School.
1. Eleven cases of a hemorrhagic diathesis are presented characterized by an
increased bleeding time in the presence of a normal coagulation time, normal blood
platelet count, and normal clot retraction. An analysis is made of 62 similar cases
in the literature.
2. These cases, which have been designated as pseudohemophilia, probably
represent a particular disorder of the capillaries, in which capillary retractility
following trauma may be inherently defective.
3. The differential diagnosis of these cases from other types of hemorrhagic
disease and the necessity for their recognition particularly from the prophylactic
standpoint are stressed. Except for easily accessible local bleeding, therapy is at
present ineffectual.
4. Standardized methods for the performance of hemorrhagic tests are suggested.
The Lee-White method for the coagulation time may give normal values as high as
20 minutes or more.