Hypovitaminosis is insufficiency of one or more essential vitamins
Diseases of the mucous membrane in case of hypo-and avitaminosis and kollahenosis. Diseases of oral mucosa under exogenous intoxications (mercurial, plumbeous, bismuthous stomatitis). Hypovitaminosis is insufficiency of one or more essential vitamins Vitamin A deficiency Vitamin A deficiency is a lack of vitamin A in humans. It is common