ICD-11 classes
05 Endocrine, nutritional or metabolic diseases
Nutritional disorders
Overweight, obesity or specific nutrient excesses
Certain specified nutrient excesses
5B90 — Vitamin excesses
5B90.0 — Hypervitaminosis A
ICD-11 5B90.0 — Hypervitaminosis A
Because vitamin A is fat soluble and can be stored, primarily in the liver, routine consumption of large amounts of vitamin A over a period of time can result in toxic symptoms, including liver damage, bone abnormalities and joint pain, alopecia, headaches, vomiting, and skin desquamation. Hypervitaminosis A appears to be due to abnormal transport and distribution of vitamin A and retinoids caused by overloading of the plasma transport mechanisms. Very high single doses can cause transient acute toxic symptoms that may include bulging fontanelles in infants; headaches in older children and adults; and vomiting, diarrhoea, loss of appetite, and irritability in all age groups. Rarely does toxicity occur from ingestion of food sources of preformed vitamin A. When this occurs, it usually results from very frequent consumption of liver products.
The diagnosis includes nothing.
The diagnosis excludes nothing.
Diagnosis with code 5B90.0 contains 1 clarifying diagnosis:
The diagnosis is coded elsewhere:
The diagnosis is included in 1 another class.
- Pseudotumour Cerebri related to Hypervitaminosis A (8D41.2)