Hypervitaminosis A: Difference between revisions
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== | {{SI}} | ||
{{Infobox medical condition | |||
[[File:All-trans-Retinol2.svg|thumb | | name = Hypervitaminosis A | ||
| image = [[File:Vitamin_A_synthesis.svg|250px]] | |||
| caption = Chemical structure of [[Vitamin A]] | |||
| field = [[Toxicology]] | |||
| symptoms = [[Nausea]], [[headache]], [[dizziness]], [[blurred vision]], [[skin peeling]] | |||
| complications = [[Liver damage]], [[osteoporosis]], [[birth defects]] | |||
| onset = Acute or chronic | |||
| duration = Varies | |||
| causes = Excessive intake of [[Vitamin A]] | |||
| risks = [[Pregnancy]], [[liver disease]], [[alcoholism]] | |||
| diagnosis = [[Blood test]], [[liver function test]] | |||
| differential = [[Hypercalcemia]], [[pseudotumor cerebri]] | |||
| prevention = Avoid excessive [[Vitamin A]] supplements | |||
| treatment = Discontinuation of [[Vitamin A]] | |||
| prognosis = Generally good with treatment | |||
| frequency = Rare | |||
}} | |||
[[File:All-trans-Retinol2.svg|left|thumb|Vitamin A supplements, a common cause of Hypervitaminosis A.]] | |||
'''Hypervitaminosis A''' refers to abnormally high storage levels of [[vitamin A]] in the body, leading to toxicity. This condition can cause a range of symptoms including [[headache]], [[blurred vision]], [[nausea]], [[vomiting]], and [[dizziness]]. In severe cases, it can also lead to birth defects. | '''Hypervitaminosis A''' refers to abnormally high storage levels of [[vitamin A]] in the body, leading to toxicity. This condition can cause a range of symptoms including [[headache]], [[blurred vision]], [[nausea]], [[vomiting]], and [[dizziness]]. In severe cases, it can also lead to birth defects. | ||
<youtube> | <youtube> | ||
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movie_url=http://www.youtube.com/v/vUFVIY6DRv4 | movie_url=http://www.youtube.com/v/vUFVIY6DRv4 | ||
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== Causes == | == Causes == | ||
The primary cause of Hypervitaminosis A is the excessive intake of vitamin A, either through diet or more commonly through overuse of supplements. | The primary cause of Hypervitaminosis A is the excessive intake of vitamin A, either through diet or more commonly through overuse of supplements. | ||
=== Dietary Sources === | === Dietary Sources === | ||
[[File:Jason's Common Life in Spring Festival (Chinese New Year's Day Festival) - Supplements - foods and interesting items-2.jpg|500px|thumb|Foods rich in Vitamin A.]] | [[File:Jason's Common Life in Spring Festival (Chinese New Year's Day Festival) - Supplements - foods and interesting items-2.jpg|500px|left|thumb|Foods rich in Vitamin A.]] | ||
High intake of foods rich in vitamin A, such as liver, can contribute to elevated levels, though this is less common than supplement-induced toxicity. | High intake of foods rich in vitamin A, such as liver, can contribute to elevated levels, though this is less common than supplement-induced toxicity. | ||
=== Supplements === | === Supplements === | ||
[[File:B vitamin supplement tablets.jpg|thumb|A bottle of Vitamin A supplements.]] | [[File:B vitamin supplement tablets.jpg|left|thumb|A bottle of Vitamin A supplements.]] | ||
Overuse of vitamin A supplements is the most common cause of Hypervitaminosis A. | Overuse of vitamin A supplements is the most common cause of Hypervitaminosis A. | ||
== Symptoms == | == Symptoms == | ||
Symptoms of vitamin A toxicity include: | Symptoms of vitamin A toxicity include: | ||
* Chronic symptoms: [[Liver damage]], [[vision changes]], [[osteoporosis]], and [[skin changes]] | * Chronic symptoms: [[Liver damage]], [[vision changes]], [[osteoporosis]], and [[skin changes]] | ||
* Acute symptoms: Headache, blurred vision, nausea, vomiting, dizziness | * Acute symptoms: Headache, blurred vision, nausea, vomiting, dizziness | ||
== Diagnosis == | == Diagnosis == | ||
Diagnosis involves a review of dietary and supplement intake, blood tests to measure vitamin A levels, and assessment of symptoms. | Diagnosis involves a review of dietary and supplement intake, blood tests to measure vitamin A levels, and assessment of symptoms. | ||
== Treatment == | == Treatment == | ||
Treatment focuses on discontinuing excess vitamin A intake. In severe cases, medical intervention may be necessary. | Treatment focuses on discontinuing excess vitamin A intake. In severe cases, medical intervention may be necessary. | ||
== Prevention == | == Prevention == | ||
Prevention involves: | Prevention involves: | ||
| Line 43: | Line 51: | ||
* Avoiding large doses of vitamin A supplements | * Avoiding large doses of vitamin A supplements | ||
* Being aware of vitamin A content in prescribed medications | * Being aware of vitamin A content in prescribed medications | ||
== External Links == | == External Links == | ||
* [https://www.mayoclinic.org/drugs-supplements-vitamin-a/art-20365945 Mayo Clinic - Vitamin A] | * [https://www.mayoclinic.org/drugs-supplements-vitamin-a/art-20365945 Mayo Clinic - Vitamin A] | ||
* [https://ods.od.nih.gov/factsheets/VitaminA-HealthProfessional/ NIH - Vitamin A Fact Sheet for Health Professionals] | * [https://ods.od.nih.gov/factsheets/VitaminA-HealthProfessional/ NIH - Vitamin A Fact Sheet for Health Professionals] | ||
[[Category:Nutritional Disorders]] | [[Category:Nutritional Disorders]] | ||
[[Category:Toxicology]] | [[Category:Toxicology]] | ||
{{stub}} | {{stub}} | ||
Latest revision as of 01:25, 8 April 2025
Editor-In-Chief: Prab R Tumpati, MD
Obesity, Sleep & Internal medicine
Founder, WikiMD Wellnesspedia &
W8MD's medical weight loss NYC, sleep center NYC
Philadelphia medical weight loss and Philadelphia sleep clinics
| Hypervitaminosis A | |
|---|---|
| |
| Synonyms | N/A |
| Pronounce | N/A |
| Specialty | N/A |
| Symptoms | Nausea, headache, dizziness, blurred vision, skin peeling |
| Complications | Liver damage, osteoporosis, birth defects |
| Onset | Acute or chronic |
| Duration | Varies |
| Types | N/A |
| Causes | Excessive intake of Vitamin A |
| Risks | Pregnancy, liver disease, alcoholism |
| Diagnosis | Blood test, liver function test |
| Differential diagnosis | Hypercalcemia, pseudotumor cerebri |
| Prevention | Avoid excessive Vitamin A supplements |
| Treatment | Discontinuation of Vitamin A |
| Medication | N/A |
| Prognosis | Generally good with treatment |
| Frequency | Rare |
| Deaths | N/A |
Hypervitaminosis A refers to abnormally high storage levels of vitamin A in the body, leading to toxicity. This condition can cause a range of symptoms including headache, blurred vision, nausea, vomiting, and dizziness. In severe cases, it can also lead to birth defects.
Causes[edit]
The primary cause of Hypervitaminosis A is the excessive intake of vitamin A, either through diet or more commonly through overuse of supplements.
Dietary Sources[edit]
_-_Supplements_-_foods_and_interesting_items-2.jpg)
High intake of foods rich in vitamin A, such as liver, can contribute to elevated levels, though this is less common than supplement-induced toxicity.
Supplements[edit]
Overuse of vitamin A supplements is the most common cause of Hypervitaminosis A.
Symptoms[edit]
Symptoms of vitamin A toxicity include:
- Chronic symptoms: Liver damage, vision changes, osteoporosis, and skin changes
- Acute symptoms: Headache, blurred vision, nausea, vomiting, dizziness
Diagnosis[edit]
Diagnosis involves a review of dietary and supplement intake, blood tests to measure vitamin A levels, and assessment of symptoms.
Treatment[edit]
Treatment focuses on discontinuing excess vitamin A intake. In severe cases, medical intervention may be necessary.
Prevention[edit]
Prevention involves:
- Adhering to recommended dietary allowances for vitamin A
- Avoiding large doses of vitamin A supplements
- Being aware of vitamin A content in prescribed medications
