Name the following:
A disease in which legs become thin and show curvature called matchstick legs.

Explanation

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks for the name of a disease characterized by thin legs that show curvature, referred to as "matchstick legs."

2. **Identifying Symptoms**: The disease is associated with protein deficiency, which leads to various symptoms. These symptoms include:
- Stunted growth
- Loss of appetite
- Anemia
...