Iron deficiency anemia causes bruising on legs with even slight bumping.

Under normal circumstances, it is not possible. It is generally caused by internal bleeding or subcutaneous hemorrhage; if it is subcutaneous bleeding, bruising will appear. Of course, patients with severe platelet deficiency may also have anemia. People with anemia usually do not experience this condition, because their blood clotting function is normal and platelet counts are within the normal range. There are many causes of anemia, and prevention and treatment should be based on the specific cause. Anemia typically occurs without recurrent episodes.