Multiple myeloma is when plasma cells become cancerous and produce bone tumors called plasmacytomas. This type of cancer is called multiple myeloma because a person has more than one plasmacytoma. Multiple myeloma is uncommon with a lifetime risk of 1 in 132 people or 0.76 percent, according to the American Cancer Society (ACS). The ACS estimate there will be 30,770 new cases and 12,770 deaths in 2018.It is unknown what exactly causes multiple myeloma, but it is more common in older adults and African-Americans than others. It also runs in families.There is no cure for multiple myeloma, but the prognosis can be good if doctors catch it early.
- extreme weakness and fatigue
- weakness and numbness in the legs
- weight loss
- frequent infections, fevers, and illness
- increased thirst
- frequent urination
- shortness of breath