## **Core Concept**
Scurvy is a disease caused by vitamin C deficiency, leading to impaired collagen synthesis and connective tissue damage. The condition affects various body systems, including the skin, bones, and blood vessels. Key features include poor wound healing, joint pain, and petechial hemorrhages.

## **Why the Correct Answer is Right**
Option D is the correct answer because it does not belong to the typical features of scurvy. Features of scurvy include gingivitis, poor wound healing, petechiae, ecchymosis, and bone pain. The correct answer will be discussed in the "Why Each Wrong Option is Incorrect" section.

## **Why Each Wrong Option is Incorrect**
* **Option A:** Gingivitis is a common feature of scurvy due to impaired collagen synthesis, leading to inflammation and bleeding of the gums.
* **Option B:** Poor wound healing is a hallmark of scurvy, as vitamin C is essential for the production of collagen, a critical component of connective tissue.
* **Option C:** Petechiae and ecchymosis are also typical features, resulting from the fragility of blood vessels due to defective collagen.

## **Clinical Pearl / High-Yield Fact**
A classic clinical pearl for scurvy is the presence of "corkscrew hairs," a type of hair shaft abnormality. Additionally, patients with scurvy may exhibit a unique pattern of bone changes visible on radiographs, known as a "Trümmerfeld zone" or "scorbutic rosary."

## **Correct Answer:** D.