Six Warning Signs Your Body May Be Signaling a Rare Blood Cancer

Health Points

• Multiple myeloma affects plasma cells in bone marrow and accounts for about 2% of all cancers, with most diagnoses occurring after age 65
• Early symptoms including bone pain, fatigue, and frequent infections are often mistaken for normal aging, leading to delayed diagnosis
• New treatment advances have significantly improved survival rates, making early detection increasingly important for better outcomes

As we age, it’s easy to dismiss persistent aches and unexplained fatigue as just another part of getting older. But certain symptoms deserve a closer look—especially when they involve a rare blood cancer that primarily affects people over 65.

Multiple myeloma is a cancer of the plasma cells, which are a type of white blood cell found in bone marrow. While it accounts for only about 2% of all cancers, it’s the second most common blood cancer in the United States. Understanding the warning signs can make a crucial difference in early detection and treatment success.

Persistent Bone Pain That Won’t Go Away

The most common symptom of multiple myeloma is bone pain, particularly in the back, ribs, or hips. This occurs because cancerous plasma cells accumulate in the bone marrow, weakening bones and sometimes causing fractures.

Unlike arthritis pain that may come and go, myeloma-related bone pain tends to be constant and may worsen with movement. Some patients experience sudden, severe pain from bones that break with minimal trauma—a condition called pathological fracture.

Unusual Fatigue and Weakness

Feeling tired is one thing, but the fatigue associated with multiple myeloma is often overwhelming and doesn’t improve with rest. This happens because the cancer interferes with the production of healthy red blood cells, leading to anemia.

The weakness can be so profound that routine daily activities become challenging. Many patients initially attribute this to aging or stress, delaying medical evaluation.

Frequent Infections

Multiple myeloma weakens the immune system by crowding out healthy plasma cells that normally produce infection-fighting antibodies. As a result, patients may experience recurrent infections, particularly pneumonia and other respiratory illnesses.

If you find yourself battling one infection after another, or if infections take longer than usual to resolve, it’s worth discussing with your healthcare provider. A pattern of frequent illness can be an important diagnostic clue.

Unexplained Weight Loss

Losing weight without trying is never normal and should always prompt medical attention. In multiple myeloma, unintentional weight loss can occur due to the body’s response to cancer, changes in appetite, or complications affecting kidney function.

This symptom often appears alongside other warning signs, creating a constellation of changes that signal something more serious than typical age-related shifts. Weight loss of 10 pounds or more without dietary changes warrants immediate evaluation.

Increased Thirst and Urination

When myeloma cells destroy bone tissue, calcium is released into the bloodstream in abnormally high amounts—a condition called hypercalcemia. This causes excessive thirst and frequent urination as the kidneys work to filter out the excess calcium.

Other symptoms of elevated calcium levels include confusion, constipation, and nausea. Because these symptoms can mimic many other conditions, they’re often overlooked in the early stages of the disease.

Kidney Problems

Multiple myeloma can damage the kidneys in several ways. The abnormal proteins produced by myeloma cells can clog the kidneys’ filtering system, while high calcium levels and certain medications can further compromise kidney function.

Signs of kidney involvement include decreased urine output, swelling in the legs and feet, and changes in urination patterns. Blood and urine tests can detect protein abnormalities that may indicate myeloma-related kidney damage.

Risk Factors Worth Knowing

While anyone can develop multiple myeloma, certain factors increase risk. Age is the most significant factor, with most diagnoses occurring in people over 65. Men are slightly more likely to develop the disease than women.

African Americans have about twice the risk of developing multiple myeloma compared to white Americans. Having a family history of the disease or a precursor condition called MGUS (monoclonal gammopathy of undetermined significance) also elevates risk.

The Importance of Early Detection

Because early-stage multiple myeloma may not cause noticeable symptoms, it’s sometimes discovered during routine blood work performed for other reasons. This underscores the importance of regular health screenings, especially as we age.

When symptoms do appear, they often develop gradually and can be vague or nonspecific. This makes it all too easy to attribute them to aging, stress, or minor health issues rather than recognizing them as potential warning signs of cancer.

Advances in Treatment Offer Hope

The good news is that treatment for multiple myeloma has advanced significantly in recent years. New targeted therapies, immunotherapies, and stem cell transplant techniques have dramatically improved survival rates and quality of life for patients.

The five-year survival rate has more than doubled over the past two decades, from about 25% to over 50%. With newer treatments still emerging, the outlook continues to improve, making early diagnosis more valuable than ever.

When to See Your Doctor

If you’re experiencing any combination of these symptoms—especially persistent bone pain, unusual fatigue, or frequent infections—schedule an appointment with your healthcare provider. While these symptoms don’t necessarily mean you have multiple myeloma, they warrant proper evaluation.

Your doctor can order blood tests, urine tests, and imaging studies to rule out multiple myeloma or detect it early when treatment is most effective. Don’t let concern about “bothering” your doctor prevent you from seeking answers about worrying symptoms.

Taking control of your health means listening to your body and advocating for yourself when something doesn’t feel right. In the case of multiple myeloma, that awareness could make all the difference in your treatment journey and long-term prognosis.