Vitamin A Deficiency, Nutritional Roup
Extracted From:
A Pocket Guide to ...
Vitamin A Deficiency: It Can Cause Blindness
University of Iowa Health Science Relations and
Stephen McGowan, MD
Professor of Internal Medicine
First Published: 2000
Last Revised: October 2003
Peer Review Status: Internally Peer Reviewed ...
Symptoms and Signs of Vitamin A Deficiency
Dry skin and hair
Increased incidence of ear infection, sinusitis, respiratory infection, urinary infection, and digestive problems
Drying of the cornea with ulceration - xerophthalmia ...
Vitamin A Deficiency In Childhood
Adequate Vitamin A status is important for maintenance of good health and disease prevention. Vitamin A is needed for vision and eye health and may also protect children against other illnesses such as diarrhoea .
Vitamin A deficiency
Deficiency of vitamin A is a major cause of preventable blindness in children; while vitamin A deficiency is very rare in developed countries, it can be quite common in developing countries.
Vitamin a Deficiency and Behavioral and…
Related Articles Vitamin A deficiency and behavioral and motor deficits in the human… more…
Clinical Trial ...
Vitamin A deficiency
Measles (when measles result in scarring/infection of the eye)
Foreign bodies striking the eye
Eye injury, whether from a force, such as a poke in the eye, or from a chemical agent ...
Vitamin A deficiency is more common in people with malabsorption problems, or those taking certain medications which interfere with absorption, such as Colestid®, a cholesterol-lowering medication, and Neomycin®, an antibacterial drug.
Vitamin A Deficiency with Xerophthalmic Scars of Cornea
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Ocular Manifestations of Vitamin A Deficiency, Other; Xerophthalmia Due to Vitamin A Deficiency ...
Vitamin A deficiency is usually due to poor diet. At highest risk are the elderly and the poor, and it is very common in parts of the world where poor nutrition is endemic.
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Vitamin A deficiency is rare in industrialized nations but remains a concern in developing countries, particularly in areas where malnutrition is common.
Vitamin A deficiency can result from inadequate intake, fat malabsorption, or liver disorders. Deficiency impairs immunity and hematopoiesis and causes skin rashes and typical ocular effects (eg, xerophthalmia, night blindness).
vitamin A deficiency
People who do not get enough vitamin A are at increased risk of lung cancer. Taking too much vitamin A may also increase lung cancer risk.
air pollution
In some cities, air pollution may slightly increase the risk of lung cancer.
Vitamin A deficiency may occur as a result of celiac disease, in which case vitamin A supplements or injections can be beneficial.
Vitamin A
Consult a qualified healthcare practitioner ...
Vitamin A deficiency ... blindness, night blindness, night blindness
Vitreous detachment ... retinal detachment
Volubilis, syndrome du ... retinal detachment
Von Hippel-Lindau Disease ... blindness ...
Signs of vitamin A deficiency include:
Bone or teeth development problems
Dry or inflamed eyes
Hair loss
Loss of appetite
Recurring infections
Skin rashes
Unexplained irritability
Vision problems (inability to see at night) ...
Definition Vitamin A deficiency exists when the chronic failure to eat sufficient amounts of vitamin A or beta-carotene results in levels of blood-serum vitamin A that are below a defined range.
Vitamin A Deficiency and Nocturnal Vision in Teenagers With Cystic Fibrosis," Huet, F., et al, European Journal of Pediatrics, 1997;156:949-951.
The Occurrence and Effects of Human Vitamin E Deficiency: A Study in Patients With Cystic Fibrosis.
Vitamin A deficiency. Night blindness is commonly caused by a deficiency in vitamin A, in fact, it is one of the first indicators of vitamin A deficiency.
Xerophthalmia.
It is usually a result of vitamin A deficiency. The rod cells, one of two light-sensitive areas of the retina of the eye, are impaired in their capacity to produce a chemical compound called rhodopsin, or visual purple, ...
In some developing countries, vitamin A deficiency in the diet and associated keratomalacia are a major cause of childhood blindness.
Other causes of keratitis include vitamin A deficiency and rheumatic diseases (such as rheumatoid arthritis and Sjögren's syndrome) in which dryness or inflammation lead to irritation and injury of the cornea.
In developing countries, where malnutrition and vitamin A deficiency are prevalent, measles has been known to kill as many as one out of four people. It is the leading cause of blindness among African children.
Vitamin A: Symptoms of vitamin A deficiency include acne, dry hair, fatigue, growth impairment, insomnia, hyperkeratosis (thickening and roughness of skin), immune impairment, night blindness, and weight loss.
Supplements are generally recommended for children with a vitamin A deficiency (which is a rare condition in the UK, but common in the developing world) and also children with severe measles who are under two years of age.
A dryness of the conjunctiva and cornea due to vitamin A deficiency. The condition begins with night blindness and conjunctival xerosis and progresses to corneal xerosis, and, in the late stages, to keratomalacia.
Poor diet/nutrition. A diet low in fruits and vegetables, a vitamin A deficiency, and chewing betel nuts (a nut containing a mild stimulant that is popular in Asia) increase the risk of oral and oropharyngeal cancer.
vtmn dfnsi noun a lack of necessary vitamins He is suffering from Vitamin A deficiency Vitamin C deficiency ...
Vitamin E
vtmn i noun a vitamin found in vegetables vegetable oils eggs and wholemeal bread ...
- Bitot's spots are caused by a vitamin A deficiency. Vitamin D and adequate protein are also needed.
- Avoid eyestrain and smoke-filled rooms.
Measles is more common in lesser developed countries, particularly where people suffer from vitamin A deficiency as part of malnutrition. This may be something to consider before traveling abroad.
When to seek medical advice ...
Measles is more common in other countries, and the disease is particularly severe in people with vitamin A deficiency, which may be part of malnutrition in Third World countries. This is something to consider before traveling abroad.
Your doctor may order this test if you have signs of a vitamin A deficiency. Beta-carotene breaks down to become vitamin A in the body.
In areas of the world where malnutrition is common, vitamin A deficiency is a cause. This is rare in the United States.
Eye anatomy ...
People who abuse alcohol. It should be noted, however, that people with alcoholism may be at risk for vitamin A deficiency, but a combination of high-dose vitamin A and alcohol may cause toxic effects in the liver.
Babies under one year
People whose immune system is suppressed, for example by cancer or HIV
Malnourished people
Children with vitamin A deficiency
Pregnant women - the infection may cause miscarriage or premature delivery ...
Vitamin A injection is effective for the treatment of vitamin A deficiency.
Diet: people who dont eat enough sources of vitamin A, such as green leafy vegetables, eggs, and whole milk products (vitamin A deficiency is very rare in the US, but still occurs in certain less developed countries) ...
Lack of immunization with the measles vaccine (MMR)
Travel to, or residence in, a country where measles is still prevalent
Vitamin A deficiency
Reducing your risk of measles ...
People with night blindness (also called impaired dark adaptation) see poorly in ... Night blindness may be an early sign of vitamin A deficiency. ...
Full article ...
Vitamin A: Vitamin A is necessary for vision, and people with multiple sclerosis often experience visual problems. Intake of vitamin A likely helps people with MS that also have a vitamin A deficiency.
Research into this technique, sometimes called ‘nutritional enhancement', is now well advanced and researchers are especially looking at major health problems like iron and vitamin A deficiency.
other infections, and if you wear contact lenses, you may be advised to replace your lenses. For cases caused by dry eye, artificial tears for lubrication are usually effective. Vitamin supplementation is given in cases where a vitamin A deficiency ...
vitamin A supplementation should be considered for children between 6 months and 2 years who are hospitalized with measles and its complications. Also, all kids older than 6 months with risk factors, such as vitamin A deficiency, ...
Additionally, dry eye can be caused by autoimmune disorders such as rheumatoid arthritis, lupus, rosacea, sarcoidosis, Sjogren's syndrome or other medical conditions such as diabetes, vitamin A deficiency and diseases such as Parkinson's disease.
The problem can also appear as an inherited deficiency in visual purple, or rhodopsin, which is the pigment of the rods of the retina. The abnormality can also result from vitamin A deficiency.
there is evidence that GTD has genetic causes related to mutation of a gene on chromosome 19;
Dietary Factors: low intake of carotene and animal fat has been associated with increased risk of complete hydatidiform, as has Vitamin A deficiency.
strabismus, sometimes known as lazy eye, in which the eyes don't line up properly
temporal arteritis, an inflammation of the arteries that supply blood to the eye
vitamin A deficiency ...
 See also: Deficiency, Symptom, Nutrition, Infections, Prevention
  
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