Avitaminosis a condition produced by lack of an essential vitamin. This condition is also known as Hypovitaminosis.

A group of diseases caused by the deficiency of one or more vitamins e.g.

• Beriberi (thiamine deficiency), 

• rickets (Vitamin D deficiency), 

• pellagra (niacin deficiency), 

• pernicious anemia (Vitamin B12), 

• bleeding (vitamin K deficiency) and 

• night blindness (avitaminosis A)

Sign and Symptoms

The list of signs and symptoms mentioned in various sources for Avitaminosis includes the 9 symptoms listed below:

• Pellagra
• Rickets
• Beriberi
• Night blindness
• Bleeding problems
• Pernicious anemia
• Alpine scurvy
• Saint Ignatius' itch

Causes

Causes of Broader Categories of Avitaminosis: Review the causal information about the various more general categories of medical conditions:

• Metabolic conditions
• Nutritional conditions
• Deficiency conditions

• Scurvy