Vitamin A toxicity may cause which symptom?

Vitamin A toxicity may cause which symptom?

• A. Increased intracranial pressure
• B. Nausea
• C. Hair loss
• D. Jaundice

Answer: (A)

Vitamin A toxicity (hypervitaminosis A) often presents with signs from brain involvement when the excess is rapid or high. A key feature is increased intracranial pressure, which can cause a severe headache and may be accompanied by nausea and vomiting. This rise in intracranial pressure is a classic, recognizable consequence of acute vitamin A overload and helps distinguish the toxicity pattern. Nausea, hair loss, and jaundice can occur with vitamin A excess as well, but they are either nonspecific (nausea) or less distinctive of the toxicity pattern. Jaundice points more toward liver injury and is not as immediately linked to the acute toxic process as intracranial hypertension. Therefore, the symptom most characteristic of vitamin A toxicity among these options is increased intracranial pressure.

Vitamin A toxicity (hypervitaminosis A) often presents with signs from brain involvement when the excess is rapid or high. A key feature is increased intracranial pressure, which can cause a severe headache and may be accompanied by nausea and vomiting. This rise in intracranial pressure is a classic, recognizable consequence of acute vitamin A overload and helps distinguish the toxicity pattern.

Nausea, hair loss, and jaundice can occur with vitamin A excess as well, but they are either nonspecific (nausea) or less distinctive of the toxicity pattern. Jaundice points more toward liver injury and is not as immediately linked to the acute toxic process as intracranial hypertension. Therefore, the symptom most characteristic of vitamin A toxicity among these options is increased intracranial pressure.