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Published on: 7/15/2026
Why might someone with multiple myeloma experience lightheadedness when standing up after sitting?
Multiple myeloma can cause lightheadedness when standing due to orthostatic hypotension, a sudden drop in blood pressure that occurs when changing positions from sitting or lying down to standing.
Why it happens in multiple myeloma:
- Anemia from reduced red blood cell production limits oxygen delivery to the brain
- Dehydration related to kidney complications affects blood volume
- Nerve damage (neuropathy) from the disease or its treatment can impair blood pressure regulation
- Medication side effects, including from chemotherapy or blood pressure drugs
Symptoms often include dizziness, blurred vision, weakness, or fainting within seconds of standing.
Because lightheadedness can stem from many causes—some serious—it's important to identify what's actually driving your symptoms before assuming the worst or waiting it out. A free, instant, online symptom check can help you evaluate your specific situation in just a few minutes, match your symptoms to possible conditions, and guide you on what type of care to seek next. It's a smart, no-cost first step toward clarity and peace of mind.
Reviewed for medical accuracy: 07/14/2026
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When someone with multiple myeloma stands up after sitting, they might feel lightheaded due to a drop in blood pressure known as orthostatic hypotension. This condition happens when the body struggles to adjust blood flow quickly enough to the brain upon standing.
Why does this happen?
- Blood Pressure Drop: Orthostatic hypotension occurs when blood pressure falls suddenly when standing up.
- Slow Adjustment: The body may not adjust blood flow to the brain quickly enough, causing dizziness.
How is this related to multiple myeloma?
- Multiple myeloma can affect the blood and nervous system, potentially contributing to issues like orthostatic hypotension.
- It's important for healthcare providers to recognize and manage this condition to prevent falls and other complications.
Understanding these symptoms and their causes can help individuals with multiple myeloma manage their condition more effectively. If you're experiencing lightheadedness when standing or other concerning symptoms, try our free AI-powered symptom checker and consult with a healthcare provider for personalized guidance.
(References)
Gibson JS, Hunter CB, & Hewitt LA. (2020). A Call to Action: The Role of Healthcare Providers in .... Neurology and therapy, 32720118.
Amjad FS, & Beinart SC. (2021). A Collaboration Between Cardiology and Neurology. Neurology and therapy, 34494209.
Santos AD, Mathew PK, Hilal A, & Wallace WA. (1981). Orthostatic hypotension: a commonly unrecognized cause .... The American journal of medicine, 7304644.
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