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Hypomagnesemia is a condition in which the amount of magnesium in the blood is lower than normal.
Low blood magnesium; Magnesium - low
Causes, incidence, and risk factors
Hypomagnesemia can be caused by:
Burns that affect a large area of the body
Excessive urination (polyuria), such as in uncontrolled diabetes and during recovery from acute kidney failure
syndromes, such as and inflammatory bowel disease
Medications including amphotericin, cisplatin, cyclosporine, diuretics, proton pump inhibitors, and aminoglycoside antibiotics
Common symptoms include:
Muscle spasms or cramps
Signs and tests
Your health care provider will do a physical exam to help determine the cause of your symptoms.
Tests that may be ordered include an
Blood and urine tests that may be done include:
Treatment depends on the type of hypomagnesemia and may include:
Fluids given through a vein (IV)
Magnesium by mouth or through a vein
Medication to relieve symptoms
The outcome depends on the condition that is causing the problem.
When to Contact a Medical Professional
Hypomagnesemia can be a life-threatening emergency. Call your health care provider right away if you have symptoms of this condition.
Treating the condition that is causing hypomagnesemia can help. If you play sports, drink fluids such as sports drinks, which contain electrolytes. Drinking only water while you are active can lead to hypomagnesemia.
Yu ASL. Disorders of magnesium and phosphorous. In: Goldman L, Schafer AI, eds. Goldman’s Cecil Medicine. 24th ed. Philadelphia, Pa.: Elsevier Saunders; 2011:chap 121.
- Last reviewed on 4/14/2013
- David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine. Also reviewed by A.D.A.M. Health Solutions, Ebix, Inc., Editorial Team: David Zieve, MD, MHA, Bethanne Black, Stephanie Slon, and Nissi Wang.
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