A 2 years old child without fever develops bone pain, vomiting, and features of increased intracranial pressure following excessive meditation. The drug most likely to be responsible for this is;

**Core Concept**
The child's symptoms are likely due to hypervitaminosis A, a condition caused by excessive intake of vitamin A, leading to increased intracranial pressure, bone pain, and vomiting.

**Why the Correct Answer is Right**
Vitamin A is a fat-soluble vitamin essential for vision, immune function, and cell growth. However, excessive intake of vitamin A can cause hypervitaminosis A, leading to various symptoms. The child's excessive meditation (medication) likely refers to the use of vitamin A-containing medications, such as retinoids. The mechanism involves the accumulation of retinyl esters in the liver, leading to increased levels of retinoic acid, which can cause increased intracranial pressure, bone pain, and vomiting.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is not provided.
* **Option B:** This option is also not provided.
* **Option C:** This option is not provided.
* **Option D:** This option is not provided.

**Clinical Pearl / High-Yield Fact**
Vitamin A toxicity is more common in children due to their higher requirement of vitamin A and their smaller liver size, which can lead to a faster accumulation of toxic levels.

**Correct Answer:** D.

✓ Correct Answer: B. Vitamin A