beriberi - avitaminosis caused by lack of thiamine (vitamin B1)

malnutrition - a state of poor nutrition; can result from insufficient or excessive or unbalanced diet or from inability to absorb foods

Alpine scurvy, maidism, mal de la rosa, mal rosso, mayidism, pellagra, Saint Ignatius' itch - a disease caused by deficiency of niacin or tryptophan (or by a defect in the metabolic conversion of tryptophan to niacin); characterized by gastrointestinal disturbances and erythema and nervous or mental disorders; may be caused by malnutrition or alcoholism or other nutritional impairments

rickets, rachitis - childhood disease caused by deficiency of vitamin D and sunlight associated with impaired metabolism of calcium and phosphorus

scorbutus, scurvy - a condition caused by deficiency of ascorbic acid (vitamin C)

moon blindness, night blindness, nyctalopia - inability to see clearly in dim light; due to a deficiency of vitamin A or to a retinal disorder