[A e-Hypercalcemia].

Area of Science:

• Endocrinology
• Clinical Toxicology

Background:

• Hypercalcemia is a common finding, primarily caused by hyperparathyroidism and malignancy.
• Less common etiologies, such as poisoning, require careful consideration.

Observation:

• An 82-year-old female presented with falls, confusion, and digestive issues, exhibiting severe hypercalcemia (>3 mmol/L).
• Investigation revealed extremely high 25-hydroxyvitamin D levels, linked to an internet-purchased supplement prescribed by her dentist.

Findings:

• The patient's symptoms were attributed to vitamin D toxicity from a dietary supplement.
• This case highlights a rare but significant cause of hypercalcemia.

Implications:

• Vitamin D supplement intoxication is a potentially serious condition.
• Increased awareness among patients and healthcare professionals is crucial for prevention and early diagnosis.