Acute post hemorrhagic anemia, also known as acute blood loss anemia, refers to a reduced number of red blood cells in the body due to bleeding. Symptoms include cool moist skin, weakness, rapid increase of heart rate, and reduced blood pressure. Causes of acute post hemorrhagic anemia are blood loss during child birth, major surgery, traumatic injuries, serious accidents, or bleeding ulcers. Treatment can be a blood transfusion or surgery to stop the bleeding.