| | PersonalMD.com Health Encyclopedia |
 | | Multiple myeloma occurs when plasma cells in the bone marrow multiply to excess. |
 | | For reasons doctors don't yet fully understand, multiple myeloma occurs when abnormal plasma cells multiply quickly and disturb the number of red blood cells, white blood cells, and platelets being made. |
 | | The main symptom of multiple myeloma is pain in your bones, particularly in your vertebrae (backbones). |
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