AI Summary Overview
Quick Glance: Common Myeloma Symptoms
Myeloma often shows up through problems with the bones, blood or kidneys rather than one single symptom. The symptoms people experience can vary, but may include:
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Ongoing pain in the back, ribs, hips or shoulders
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Tiredness, weakness or breathlessness without a clear reason
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Infections that keep coming back or take longer to clear
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A fracture after a minor fall or strain
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Feeling unusually thirsty and passing urine more often
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Poor appetite or weight loss without trying
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Nausea, constipation or discomfort in the abdomen
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Numbness, tingling or weakness in the arms or legs
Myeloma Symptoms That Should Not Be Ignored
As myeloma is a systemic blood cancer, it affects multiple body systems, including the bones, kidneys, and immune system. To prevent complications from spreading or worsening, the following symptoms should not be ignored:
| Symptom | What It May Indicate |
| Ongoing or worsening pain in the back, ribs or hips | Bone damage or a vertebral fracture |
| A fracture after minor movement or a small fall | Weakened bone caused by myeloma |
| Persistent fatigue, paleness, dizziness or breathlessness | Anaemia caused by reduced red blood cells |
| Repeated chest, urinary or other infections | Reduced production of normal, effective antibodies |
| Marked thirst, frequent urination or increasing confusion | Raised blood calcium (Hypercalcaemia) |
| Swollen ankles, reduced appetite or changes in urination | Possible kidney impairment |
| Unexplained bruising, nosebleeds or bleeding gums | A reduced platelet count or impaired platelet function |
| New numbness, weakness or difficulty walking | Pressure on nerves or the spinal cord |
Why Do Myeloma Symptoms Occur?
Myeloma symptoms occur because abnormal plasma cells multiply uncontrollably in the bone marrow. Instead of making normal protective antibodies, these cancerous cells produce a useless protein called a paraprotein, crowding out healthy blood cells, damaging bone, and weakening the immune system.
Inside the bone marrow, as these cells accumulate, they leave less space for normal blood cell production. A fall in red blood cells causes anaemia, leading to tiredness, paleness, weakness and breathlessness. It also produces abnormal antibodies that do not protect against infection and suppress normal antibody production. Advanced bone marrow involvement can also reduce healthy white blood cells, further weakening the immune response.
Beyond the marrow, myeloma directly attacks the skeleton. Bone tissue normally follows a controlled cycle of breakdown and rebuilding. Myeloma disrupts this balance, increasing bone loss without enough new bone formation. The affected bones become painful and fragile, while the vertebrae can collapse or fracture.
As a direct result of this bone damage, calcium released from damaged bone can enter the bloodstream. Raised calcium levels may cause thirst, frequent urination, constipation, nausea, confusion or drowsiness.
This combination of bone destruction and paraproteins then targets the organs. Abnormal proteins, particularly free light chains, can pass through the kidneys and damage their filtering structures. Dehydration and raised calcium levels place additional strain on kidney function.
Finally, structural changes in the bone can affect nearby nerves. A weakened vertebra or a collection of plasma cells can occasionally press on the spinal cord. This may cause severe back pain, altered sensation, limb weakness or loss of bladder and bowel control.
Myeloma Symptoms That Require Immediate Medical Attention
Some myeloma symptoms signal serious complications that can rapidly worsen without emergency care. These include:
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Sudden weakness or loss of feeling in the arms or legs
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New difficulty standing or walking
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Loss of bladder or bowel control
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Severe back pain with numbness, tingling or weakness
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Sudden confusion, profound drowsiness or difficulty waking
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Severe or rapidly worsening breathlessness
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Very little urine or rapidly increasing swelling
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Persistent vomiting with marked weakness or dehydration
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A high temperature with shaking, confusion or fast breathing
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Bleeding that is heavy or difficult to stop
Symptoms of Myeloma Based on Type
Myeloma is categorised by the presence of symptoms and organ damage, or by the specific abnormal protein produced:
| Type | Symptoms |
| Smouldering myeloma | No myeloma-related symptoms or CRAB changes; usually identified through abnormal blood, urine or bone-marrow results |
| Active myeloma | May cause bone pain, fractures, anaemia, recurrent infections, raised calcium, kidney impairment or nerve symptoms |
| Light-chain myeloma (Active myeloma sub-type) | Symptoms overlap with other forms of active myeloma; kidney impairment can be prominent because abnormal cells mainly produce free light chains |
| Non-secretory myeloma (Active myeloma sub-type) | Little or no measurable paraprotein; symptoms arise from bone damage, anaemia or other effects of abnormal plasma cells |
Can You Have Myeloma Without Symptoms?
Yes, you can have myeloma without any symptoms in its early, smouldering stage. It causes no myeloma-related symptoms or organ damage and is often identified through blood, urine, or bone marrow tests.
Monoclonal gammopathy of undetermined significance (MGUS) is a separate, precursor plasma-cell condition that usually causes no symptoms. Only a small proportion of people with MGUS develop myeloma, although it is generally preceded by an MGUS stage.
Since neither condition causes early warning signs, symptoms alone cannot reveal whether abnormal plasma cells are dormant or actively damaging organs. Doctors use blood, urine, bone marrow and imaging results to look for organ damage and determine the disease pattern.
When Can Myeloma Symptoms Become Life-Threatening?
Severe myeloma complications can affect the spinal cord, kidneys, calcium levels or immune system. They become life-threatening when they cause:
| Emergency Condition | Why It Is Serious |
| Spinal cord compression | Pressure on the spinal cord can cause permanent weakness, paralysis or loss of bladder and bowel control |
| Severe hypercalcaemia | Very high calcium levels can cause dehydration, confusion, abnormal heart rhythms or loss of consciousness |
| Acute kidney injury | Rapid loss of kidney function allows waste and fluid to build up in the body |
| Sepsis | Reduced immune protection allows infection to spread and impair organ function |
| Hyperviscosity syndrome | High levels of abnormal protein make the blood unusually thick and can restrict circulation to the brain, eyes and other organs |
| Severe bleeding | A very low platelet count or impaired platelet function can cause persistent or uncontrolled bleeding |
How are Myeloma Symptoms Diagnosed?
Doctors use several tests to diagnose myeloma because no single test can confirm the diagnosis in every case. These tests may include:
| Diagnostic Test or Assessment | Purpose |
| Symptom and medical history | Reviews bone pain, fatigue, infections, fractures and kidney or nerve symptoms |
| Full blood count | Checks for anaemia and reduced white blood cells or platelets |
| Blood calcium test | Detects raised calcium caused by bone breakdown |
| Kidney function tests | Measure how effectively the kidneys filter waste |
| Serum protein electrophoresis | Looks for an abnormal monoclonal protein in the blood |
| Serum immunofixation | Identifies the type of monoclonal protein after an abnormal electrophoresis result |
| Serum-free light-chain test | Measures abnormal free light chains produced by myeloma cells |
| Urine protein tests | Detect light chains or other abnormal proteins in urine |
| Bone marrow biopsy | Measures abnormal plasma cells within the bone marrow |
| Whole-body MRI or low-dose CT | Detects bone lesions, fractures and bone-marrow disease |
| PET-CT | Assesses active disease in selected cases |
FAQs
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Q1. What are usually the first myeloma symptoms?
Ans: Persistent bone pain and unexplained fatigue are common early symptoms of myeloma. Some people first seek help for a fracture, a recurring infection or an abnormal blood result, which may indicate myeloma. -
Q2. Does myeloma always cause bone pain?
Ans: No. Some people initially notice fatigue, breathlessness, repeated infections, excessive thirst or kidney-related changes as myeloma symptoms instead of bone pain. Besides, smouldering myeloma causes no symptoms at all. -
Q3. Can myeloma symptoms be mistaken for ageing?
Ans: Yes. Back pain, tiredness and infections have many possible causes and are often attributed to ageing. When these symptoms persist, worsen or occur together, they need assessment for myeloma.
