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Hypervitaminosis A in a child from megadosing
Insights
Excessive vitamin A intake in a young child led to hypervitaminosis A, causing symptoms like skin dryness and bone pain. Early diagnosis relies on a detailed history of vitamin A consumption and blood tests.
Area of Science:
- Pediatric toxicology
- Nutritional science
- Dermatology
Background:
- Vitamin A is essential for vision, immune function, and skin health.
- Chronic excessive intake of vitamin A (hypervitaminosis A) can lead to toxicity.
- Accurate dosage is crucial, especially in pediatric populations.
Observation:
- A 2-year-9-month-old boy presented with irritability, xerosis (dry skin), pruritus (itching), bone pain, and loss of ambulation.
- Symptoms developed after daily intake of 6,338 IU/kg/day of vitamin A for 5 months.
- Bone scan revealed more extensive bone involvement than initial X-rays indicated.
Findings:
- The clinical presentation was consistent with hypervitaminosis A.
- Serum vitamin A levels confirmed the diagnosis of toxicity.
- Radiological and bone scan findings highlighted the skeletal impact of vitamin A excess.
Implications:
- Highlights the critical importance of accurate vitamin A dosing in children.
- Emphasizes the need for thorough patient history, including supplement intake, for diagnosing toxicity.
- Underscores the potential for significant skeletal manifestations in pediatric vitamin A toxicity.
Abstract:
Hypervitaminosis A developed in a 2-year-9-month-old boy after his mother gave him 6,338 IU/kg/day vitamin A for 5 months. The clinical features included irritability, xerosis of the skin and mucous membranes, pruritus, bone pain, and loss of ambulation. The bone scan showed involvement of more bones than was apparent on the roentgenograms. A prompt diagnosis depended on an accurate history of excessive vitamin intake, and the serum vitamin A level confirmed the diagnosis.