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Hypervitaminosis A

Injury	Disease	Nutrition	Poison

Symptoms	Surgery	Test	Special Topic

Vitamin A source

Vitamin A source

Hypervitaminosis A

Alternative Names:

Vitamin A toxicity
Symptoms:

Bulging fontanelles (infants)
Bone pain or swelling
Craniotabes (infants and children)
Skin and hair changes
- hair loss
- seborrhea
- cracking at corners of the mouth
Irritability
Decreased appetite
Poor weight gain (infants and children)
Vomiting
Drowsiness

Signs and tests:

Serum vitamin A levels
A history of either acute vitamin A ingestion or long-term ingestion at levels above recommended values
Periosteal calcification (hands)
High blood calcium levels
High serum creatinine (suggestive of kidney damage)

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