Hypervitaminosis A?

Hypervitaminosis A?
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DefinitionHypervitaminosis A is having too much vitamin A in the body.Alternative NamesVitamin A toxicityCauses, incidence, and risk factorsThere are two types of vitamin A hypervitaminosis:Acute -- caused by taking too much vitamin A over a short period of timeChronic -- occurs when too much of the vitamin is present over a longer periodChronic vitamin A toxicity develops after taking too much vitamin A for long periods.SymptomsAbnormal softening of the skull bone (craniotabes -- infants and children)Blurred visionBone pain or swellingBulging fontanelle (infants)Changes in consciousnessDecreased appetiteDizzinessDouble vision (young children)DrowsinessHeadacheIncreased intracranial pressureIrritabilityLiver damageNauseaPoor weight gain (infants and children)Skin and hair changes Cracking
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What is hypervitaminosis ?

Description : What is hypervitaminosis ?

Last Answer : Hypervitaminosis is a type of reaction that occurs due to excess vitamin intake. Toxins in the body occur when taking extra vitamin 'A'. In adults, symptoms such as nausea , loss of appetite , ... occur when children take 20 times more vitamin A. Excess vitamin A during pregnancy damages the fetus.

A rise in blood ‘Ca’ may indicate (A) Paget’s disease (B) Vitamin D deficiency (C) Cushing’s disease (D) Hypervitaminosis D

Description : A rise in blood ‘Ca’ may indicate (A) Paget’s disease (B) Vitamin D deficiency (C) Cushing’s disease (D) Hypervitaminosis D

Last Answer : Answer : D

Serum inorganic phosphorous rises in all the following conditions except (A) Hypoparathyroidism (B) Hypervitaminosis D (C) Chronic renal failure (D) After a carbohydrate-rich meal MINERAL METABOLISM 197

Description : Serum inorganic phosphorous rises in all the following conditions except (A) Hypoparathyroidism (B) Hypervitaminosis D (C) Chronic renal failure (D) After a carbohydrate-rich meal MINERAL METABOLISM 197

Last Answer : Answer : D

Hypercalcaemia can occur in all the following except (A) Hyperparathyroidism (B) Hypervitaminosis D (C) Milk alkali syndrome (D) Nephrotic syndrome

Description : Hypercalcaemia can occur in all the following except (A) Hyperparathyroidism (B) Hypervitaminosis D (C) Milk alkali syndrome (D) Nephrotic syndrome

Last Answer : Answer : D

A rise in blood calcium may indicate (A) Paget’s disease (B) Rickets (C) Osteomalacia (D) Hypervitaminosis D

Description : A rise in blood calcium may indicate (A) Paget’s disease (B) Rickets (C) Osteomalacia (D) Hypervitaminosis D

Last Answer : Answer : D

Metastatic calcification is seen in hypervitaminosis: (A) A (B) K (C) D (D) E

Description : Metastatic calcification is seen in hypervitaminosis: (A) A (B) K (C) D (D) E

Last Answer : Answer : C

Metastatic classification is seen in hypervitaminosis: (A) A (B) K (C) D (D) E

Description : Metastatic classification is seen in hypervitaminosis: (A) A (B) K (C) D (D) E

Last Answer : Answer : A

Levels of serum calcium and inorganic phosphorus are increased in (A) Hypervitaminosis D (B) Hypoparathyroidism (C) Hypovitaminosis D (D) None of these

Description : Levels of serum calcium and inorganic phosphorus are increased in (A) Hypervitaminosis D (B) Hypoparathyroidism (C) Hypovitaminosis D (D) None of these

Last Answer : Answer : A

Calcification of soft tissues can occur in (A) Osteomalacia (B) Rickets (C) Hypervitaminosis D (D) None of these

Description : Calcification of soft tissues can occur in (A) Osteomalacia (B) Rickets (C) Hypervitaminosis D (D) None of these

Last Answer : Answer : C

Bowlegs and knock-knees can occur in (A) Rickets (B) Osteomalacia (C) Both A and B (D) Hypervitaminosis D

Description : Bowlegs and knock-knees can occur in (A) Rickets (B) Osteomalacia (C) Both A and B (D) Hypervitaminosis D

Last Answer : Answer : A

Hypervitaminosis K in neonates may cause (A) Porphyria (B) Jaundice (C) Pellagra (D) Prolonged bleeding

Description : Hypervitaminosis K in neonates may cause (A) Porphyria (B) Jaundice (C) Pellagra (D) Prolonged bleeding

Last Answer : Answer : B

The retinal pigment epithelium (RPE): a. is sensitive to hypervitaminosis A b. isomerizes all-trans-retinal to 11-cis-retinol c. does not undergo mitosis in response to injury d. secrets the outer layer of the basal lamina that forms the Bruch's membrane.

Description : The retinal pigment epithelium (RPE): a. is sensitive to hypervitaminosis A b. isomerizes all-trans-retinal to 11-cis-retinol c. does not undergo mitosis in response to injury d. secrets the outer layer of the basal lamina that forms the Bruch's membrane.

Last Answer : isomerizes all-trans-retinal to 11-cis-retinol

Hyper keratosis is due to (a) Hypervitaminosis of vitamin A (b) Hypervitaminosis of vitamin C (c) Hypervitaminosis of vitamin K (d) Hypervitaminosis of vitamin B12

Description : Hyper keratosis is due to (a) Hypervitaminosis of vitamin A (b) Hypervitaminosis of vitamin C (c) Hypervitaminosis of vitamin K (d) Hypervitaminosis of vitamin B12

Last Answer : (a) Hypervitaminosis of vitamin A