Avitaminosis

Avitaminosis is any disease caused by a vitamin deficiency. They are designated by the same letter as the vitamin. Avitaminoses include

• avitaminosis A, xerophthalmia[?] or night blindness[?]
• thiamin deficiency causes beriberi
• niacin deficiency causes pellagra[?]
• avitaminosis C, scurvy
• vitamin D deficiency causes rickets