Specific symptoms associated with acquired aplastic anemia may vary, but include fatigue, chronic infections, dizziness, weakness, headaches, and episodes of excessive bleeding.

Both acquired aplastic anemia following immunosuppressive treatment and Fanconi's anemia can evolve into MDS.

Idiopathic Aplastic Anemia None Acquired aplastic anemia is a rare disorder caused by profound, almost complete bone marrow failure.

In acquired aplastic anemia, an almost complete absence of hematopoietic stem cells eventually results in low levels of red and white blood cells and platelets (pancytopenia).

Although some cases of acquired aplastic anemia occur secondary to other disorders, researchers now believe that most cases result from a disorder of the patient's immune system, in which the immune system mistakenly targets the bone marrow (autoimmunity).