Vitamin D deficiency

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Vitamin D deficiency

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High Yield Notes

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Vitamin D deficiency

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Questions

USMLE® Step 1 style questions USMLE

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A 2-week-old girl is brought to the clinic by her parents for a well-infant examination. She was born at 38 weeks gestation at a tertiary care hospital and weighed 3.2-kg (7-lb 1-oz) at birth. She has been exclusively breastfeeding with good latch, voiding appropriately, and stooling daily. Her mother consumes a well-balanced diet and does not consume alcohol or smoke tobacco. Vitals are within normal limits. Physical examination is unremarkable. At this time, supplementation with which of the following is most important in this infant?  

External References

First Aid

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2016

Rickets p. 473

vitamin D deficiency p. 68

Vitamin D deficiency p. 350

hyperparathyroidism p. 474

osteomalacia/rickets p. 473, 473

Summary

Vitamin D deficiency, also known as hypovitaminosis D, is a condition resulting from insufficient levels of vitamin D in the body. It can be caused by inadequate sunlight exposure, dietary intake, or medical conditions that impair vitamin D absorption or conversion. The deficiency can cause a range of symptoms, including bone pain, muscle weakness, fatigue, and an increased risk of fractures, and can lead to bone-softening diseases like rickets in children and osteomalacia and osteoporosis in adults. The treatment for vitamin D deficiency usually involves vitamin D supplementation and addressing the underlying cause.

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