Deficiency (redirected from vitamin A, gingival hyperplasia in deficiency)

deficiency /de·fi·cien·cy/ (de-fish´en-se) a lack or shortage; a condition characterized by presence of less than normal or necessary supply or competence.

---

color vision deficiency  color blindness; any deviation from normal perception of one or more colors.

disaccharidase deficiency  less than normal activity of the enzymes of the intestinal mucosa that cleave disaccharides, usually denoting a generalized deficiency of all such enzymes secondary to a disorder of the small intestine.

familial apolipoprotein C-II (apo C-II) deficiency  a form of familial hyperchylomicronemia due to lack of apo C-II, a necessary cofactor for lipoprotein lipase.

familial high-density lipoprotein (HDL) deficiency  any of several inherited disorders of lipoprotein and lipid metabolism that result in decreased plasma levels of HDL, particularly Tangier disease.

familial lipoprotein deficiency  any inherited disorder of lipoprotein metabolism resulting in deficiency of one or more plasma lipoproteins.

isolated IgA deficiency , IgA deficiency, selective the most common immunodeficiency disorder, deficiency of IgA but normal levels of other immunoglobulin classes and normal cellular immunity; it is marked by recurrent sinopulmonary infections, allergy, gastrointestinal disease, and autoimmune diseases.

molybdenum cofactor deficiency  an inherited disorder in which deficiency of the molybdenum cofactor causes deficiency of a variety of enzymes, resulting in severe neurologic abnormalities, dislocated ocular lenses, mental retardation, xanthinuria, and early death.

plasma thromboplastin antecedent deficiency , PTA deficiency hemophilia C.

---

de·fi·cien·cy (d-fshn-s)

n.

A lack or shortage of something essential to health; an insufficiency.

---

Deficiency

A shortage of something necessary for health.

Mentioned in: Kinesiology, Applied

---

deficiency,

n a lack or defect.

deficiency, ac-globulin,

n See parahemophilia.

deficiency, dietary,

n an inadequate amount of food intake or an insufficiency of any of the food elements necessary for proper nutrition.

deficiency, mineral,

n a form of nutritional deficiency produced by the inadequate ingestion, absorption, use, and/or overexcretion of essential inorganic elements such as calcium, magnesium, and phosphorus.

deficiency, nicotinic acid

(nik´tin´ik),
n a deficiency of nicotinic acid in the diet, resulting in acute erythematous stomatitis, papillary atrophy of the tongue, and ulcerative gingivitis.

deficiency, nutritional,

n See deficiency, dietary.

deficiency, plasma thromboplastic antecedent

(throm´bōplas´tik),
n See hemophilia C.

deficiency, protein,

n a malnutritive state produced by inadequate ingestion, absorption, use, or overexcretion of essential protein elements. Degenerative lesions produced in the periodontium include osteoporosis of the alveolar and supporting bone and disappearance of fibroblasts and connective tissue fibers of the periodontal membrane.

deficiency, PTA,

n See hemophilia C.

deficiency, salivary

(sal´var´ē),
n an insufficiency in the amount of saliva produced by the salivary glands. The lack of saliva production can result in dry mouth (xerostomia), caries, and infection of the oral cavity.

deficiency, vitamin A, gingival hyperplasia in,

n the hyperplastic and hyperkeratotic gingival changes occurring with decreased ingestion, diminished absorption, faulty use, or overexcretion of vitamin A. E.g., in diabetes mellitus, the liver often cannot effectively convert carotene to vitamin A.

---

deficiency

a lack or shortage; a condition characterized by the presence of less than the normal or necessary supply or competence.

---

antidiuretic hormone deficiency

see diabetes insipidus.

clotting factor deficiency

see clotting.

Hageman factor deficiency

see clotting.

nutritional deficiency

see under specific nutritional factors.

Stuart factor deficiency

see clotting.