MGUS symptoms: what people may notice

The MGUS finding itself may not make you feel unwell. Symptoms such as tiredness, bone pain, repeated infections, bruising, swelling or changes in urination can have many causes. They should be assessed in context rather than used to decide that MGUS has become multiple myeloma.

Clinicians may check blood counts, kidney function, calcium and protein measurements when symptoms or routine monitoring raise a question. The absence of symptoms also does not replace the follow-up plan, because laboratory changes may appear before someone notices a difference.

Note when a symptom started, where it occurs, how it affects activity and whether it is getting worse. Bring this record to your appointment, along with your medicine and supplement list. Keep planned blood or urine tests even when you feel well, and ask which symptoms should prompt an earlier call.

For context about the condition clinicians may distinguish from MGUS, read [Multiple Myeloma](/conditions/multiple-myeloma/). You can also review [Follow-Up After Cancer Treatment](/treatments/survivorship-and-rehabilitation/post-treatment-surveillance/) for practical ideas about planned health reviews.

Contact your healthcare team promptly for persistent bone or back pain, repeated infections, unusual bleeding or bruising, increasing weakness, swelling, reduced urine or strong thirst. Seek urgent help for severe back pain with leg weakness or numbness, confusion, or new loss of bladder or bowel control. Do not wait for routine testing if symptoms are sudden or severe.

Ask whether your symptoms could have a cause unrelated to MGUS, which tests are appropriate, and whether your monitoring schedule should change. Ask for clear instructions about which symptoms need a same-day call and which can wait for the next visit.