What should I do if I frequently feel faint due to multiple myeloma?

Reviewed by Yoshinori Abe, MD

Internal Medicine

Feeling faint with multiple myeloma may signal underlying issues with your heart, blood pressure, anemia, or blood thickness (hyperviscosity). These symptoms can indicate complications that require prompt medical evaluation. Speak with your doctor to identify the cause and determine appropriate treatment.

Because fainting can point to several possible causes—some serious—it's wise to get clarity fast. Take a free, instant, online symptom check to better understand what may be driving your symptoms and confidently plan your next steps before your doctor's visit.

Reviewed for medical accuracy: 07/14/2026

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Explanation

Feeling faint often can be scary, especially if you have a condition like multiple myeloma. This might happen because your heart is not working as it should, or your blood pressure drops when you stand up.

What You Can Do:

Talk to Your Doctor: It's important to tell your doctor about these symptoms. They might check your heart with a special monitor called a Holter monitor to see what's happening.
Check Your Blood Pressure: Sometimes, feeling faint can be because your blood pressure drops when you stand up, called orthostatic dizziness. Your doctor can help you with this.
Work with Specialists: Your doctor might work with heart and brain specialists to find out why you feel faint and to help you feel better.

If you're experiencing frequent fainting or dizziness and want to better understand your symptoms before your next appointment, try our free AI symptom checker to get personalized insights. Remember, it's important to let your healthcare team know how you're feeling so they can help you stay safe and healthy.

(References)

André-Fouet X, Monsarrat N, Wintzer B, Benflis S, Thizy JF, Allouache K, et al. (1985). [Syncopes and brief spells of feeling faint: value of Holter .... Archives des maladies du coeur et des vaisseaux, 3936446.
Radtke A, Lempert T, von Brevern M, Feldmann M, Lezius F, & Neuhauser H. (2011). Prevalence and complications of orthostatic dizziness in .... Clinical autonomic research : official journal of the Clinical Autonomic Research Society, 21279415.
Amjad FS, & Beinart SC. (2021). A Collaboration Between Cardiology and Neurology. Neurology and therapy, 34494209.

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