Chronic Iron Deficiency Anemia as the Initial Manifestation of Undiagnosed Von Willebrand Disease in a Woman With Long-Standing Menorrhagia: A Case Report.

Iron deficiency anemia is a common clinical condition in reproductive‑age women and is frequently attributed to gynecologic blood loss. However, underlying inherited bleeding disorders remain underrecognized contributors. We present a case of a woman with chronic fatigue, weakness, and long-standing menorrhagia who was repeatedly treated for iron deficiency anemia without sustained improvement. Subsequent hematologic evaluation revealed Von Willebrand factor (VWF) deficiency consistent with Von Willebrand disease. This case highlights the importance of recognizing abnormal uterine bleeding as a potential manifestation of an underlying hemostatic disorder and underscores the need for early diagnostic evaluation to prevent prolonged morbidity and avoid delays in definitive management.