Hypervitaminosis A is having too much vitamin A in the body.
Vitamin A toxicity There are two types of vitamin A
hypervitaminosis: - Acute -- caused by taking too much vitamin A
over a short period of time - Chronic -- occurs when too much of
the vitamin is present over a longer period Chronic vitamin A
toxicity develops after taking too much vitamin A for long
periods. - Abnormal softening of the skull bone (craniotabes --
infants and children) - Blurred vision - Bone pain or swelling -
Bulging fontanelle (infants) - Changes in consciousness -
Decreased appetite - Double vision (young children) - Increased
intracranial pressure - Liver damage - Poor weight gain (infants
and children) - Skin and hair changes - Vision changes Exams and
Tests - Bone x-rays - Blood calcium test - Cholesterol test -
Liver function test - Blood test to check vitamin A levels
Treatment involves simply stopping the use of too much vitamin
A. Most people fully recover. - Excessively high calcium levels
- Failure to thrive in infants