E50-E64: Other nutritional deficiencies

E50: Vitamin A deficiency

Vitamin A deficiency refers to a group of conditions resulting from insufficient intake or absorption of vitamin A. It's often caused by a diet deficient in vitamin A-rich foods, such as leafy green vegetables, carrots, and organ meats, or by conditions that disrupt the absorption of nutrients in the body. Symptoms can vary and often include vision problems, especially in low light conditions, which is known as night blindness. Over time, the deficiency can lead to a series of eye conditions such as cornea drying (xerophthalmia) or cornea softening (keratomalacia), potentially leading to blindness. Additionally, the deficiency can affect the immune system leading to an increased susceptibility to infections. Systematically, it can impact numerous body processes due to the important roles of vitamin A in the body, including growth, development, and maintenance of the skin and mucous membranes.