Unexplained menorrhagia and hematuria: a case report of Munchausen's syndrome by proxy.

Unexplained menorrhagia and hematuria occurred in a 13-year-old female with a mild inherited platelet disorder who had never experienced prior bleeding as a result of this disorder. An intensive search revealed that this patient was receiving coumadin that was given by the mother. In addition, the mother drew large volumes of blood from the patient under the pretense of following a physician's orders. The mother also falsified the laboratory data to erase from her daughter's file a laboratory result documenting warfarin in the blood.