hypervitaminosis D
Quick Summary
Hypervitaminosis D is a condition resulting from an excess of vitamin D in the body, which can reach toxic levels because surplus vitamin D is not eliminated in urine. This condition can lead to weakness, fatigue, loss of appetite, nausea, and vomiting. In infants and children, it may cause growth failure.1
The primary pathology involves abnormally high concentrations of calcium in the blood (hypercalcemia) due to vitamin D's role in calcium absorption. This can lead to widespread calcium phosphate deposition, particularly in the kidneys. Toxic levels have been observed in adults and infants receiving specific daily intakes of vitamin D. Excessive sunlight exposure does not cause vitamin D toxicity.1
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