**Kwashiorkor Features**

### Core Concept

Kwashiorkor is a severe form of malnutrition characterized by protein deficiency, leading to edema and impaired growth and development. It occurs when there is a lack of sufficient protein in the diet, often seen in individuals with limited access to food, particularly in areas with famine or poverty. The condition is distinct from marasmus, another form of malnutrition that is caused by a lack of overall calories and nutrients.

### Why the Correct Answer is Right

Kwashiorkor is typically characterized by the presence of edema, which is a result of the liver's inability to produce albumin due to protein deficiency. This leads to decreased oncotic pressure and increased fluid retention in the tissues. Additionally, kwashiorkor is often associated with growth retardation, skin lesions, and a weakened immune system. The condition can also cause changes in hair texture, diarrhea, and fatigue.

### Why Each Wrong Option is Incorrect

**Option A:** Edema is actually a hallmark feature of kwashiorkor, so this option is incorrect.

**Option B:** Growth retardation is a common consequence of kwashiorkor, making this option incorrect as well.

**Option C:** Diarrhea can be associated with kwashiorkor, likely due to the poor diet and weakened immune system, so this option is also incorrect.

### Clinical Pearl / High-Yield Fact

It's essential to note that kwashiorkor is often reversible with proper treatment, including nutritional supplementation and addressing the underlying cause of protein deficiency. A key aspect of diagnosis is the presence of edema, which can be a distinguishing feature from marasmus.

### Correct Answer: D