Eyes Home > Vitamin A Deficiency
Although rare in developed countries, vitamin A deficiency is a leading cause of blindness in developing areas of the world. Symptoms that may occur as a result of a deficiency include diarrhea, night blindness, and pneumonia. Certain people appear to be at a higher risk for developing deficiency of vitamin A, including those with diabetes, liver disease, or cystic fibrosis.
- Night blindness, which can progress to complete blindness
- A weak immune system (increasing the susceptibility to infections)
- Goose bump-like appearance of the skin
- Slow growth
- Slow bone development
- Decreased chance of surviving serious illnesses
- Birth defects.
- Protein deficiency
- An overactive thyroid (hyperthyroidism)
- Liver disease
- Pancreatic disease
- Intestinal disease (such as Crohn's disease)
- Cystic fibrosis.