People with multiple myeloma can have many different symptoms. The most common symptom is bone pain, especially in the backbone (spine) and ribs. People with multiple myeloma may also have anemia (low number of red blood cells). Anemia can cause weakness, or tiredness.
Other symptoms include:
- Frequent infections
- Muscle weakness
- Fractures (broken bones)
To find out if a person with these symptoms has multiple myeloma, a doctor looks at X-rays of the person's bones and studies his or her blood, urine, and bone marrow cells.