All of the following statements are true regarding Vitamin A deficiency except –
Correct Answer: Anterior segment of the eye is initially involved
Description: Clinical manifestations of Vit A Deficiency
The most obvious symptoms of vitamin A deficiency are associated with requirement of this vitamin for maintenance of epithelial functions -
Intestine --> Pathogenic attack causes diarrhea
Respiratory tract --> Infections & bronchial obstruction
Urinary tract --> UTI and caliculi
Skin --> Dry, scaly, hyperkeratotic patches
Squamous metaplasia of renal pelves, ureter, vaginal epithelium, and pancreatic & salivary ducts.
Poor growth because of
Above health problems in children
Vitamin A helps in bone growth ---> deficiency may retard growth
The most characteristic and specific sign of vitamin A deficiency are eye lesions. Which include night blindness, conjuctival xerosis, Bitot's spots, corneal xerosis and keratomalacia. The term xerophthalmia (dry eye) comprises all the ocular manifestations of vitamin A deficiency.
Other features are -
i) Skin becomes toad like (phrynoderma). But it is due to associated deficiency of essential fatty acids.
ii) Vitamin A deficiency may rarely lead to hydrocephalus.
Category:
Pediatrics
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