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Definition:

Hypervitaminosis D is a condition that occurs after taking excessive doses of vitamin D .



Alternative Names:

Vitamin D toxicity



Causes, incidence, and risk factors:

An excess of vitamin D causes abnormally high levels of calcium in the blood, which can eventually severely damage the bones, soft tissues, and kidneys. It is almost always caused by forms of vitamin D that require a doctor's prescription.



Signs and tests:

Tests to confirm the diagnosis:



Treatment:

Stop taking vitamin D. Consult your physician. In severe cases, other treatment may be necessary.



Support Groups:



Expectations (prognosis):

Recovery is expected.



Complications:
  • Dehydration
  • Hypercalcemia
  • Kidney damage
  • Kidney stones


Calling your health care provider:

Call your health care provider if you or your child show symptoms of hypervitaminosis D and have been taking vitamin D in excess of the recommended daily allowance. Also call if you or your child show symptoms and you have been taking a prescription form of vitamin D.



Prevention:

To prevent this condition, pay careful attention to the correct vitamin D dose.




Review Date: 12/6/2007
Reviewed By: Nancy J. Rennert, M.D., Chief of Endocrinology Diabetes, Norwalk Hospital, Associate Clinical Professor of Medicine, Yale University School of Medicine, New Haven, CT. Review provided by VeriMed Healthcare Network.

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
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