All are skin findings in atopic dermatitis, EXCEPT:
**Core Concept**
Atopic dermatitis, also known as eczema, is a chronic inflammatory skin condition characterized by dry, itchy, and scaly skin. It is associated with an increased risk of developing allergies and asthma. The skin findings in atopic dermatitis can be divided into several types, including xerosis, lichenification, and erythema.
**Why the Correct Answer is Right**
Atopic dermatitis typically presents with skin findings such as xerosis (dry skin), lichenification (thickened skin), and erythema (redness). These skin findings are a result of the chronic inflammation and immune system dysregulation that occurs in atopic dermatitis. The skin barrier function is impaired, allowing water to escape and leading to dryness and itchiness.
**Why Each Wrong Option is Incorrect**
**Option A:**
- This is actually a common skin finding in atopic dermatitis, characterized by thickened skin due to chronic rubbing and scratching.
**Option B:**
- This is also a common skin finding in atopic dermatitis, characterized by a red, inflamed appearance of the skin.
**Option C:**
- This option is correct, as excoriations are not a typical skin finding in atopic dermatitis. Excoriations are actually a result of scratching and rubbing the skin, which can occur in other conditions such as psoriasis or dermatitis herpetiformis.
**Clinical Pearl / High-Yield Fact**
In atopic dermatitis, the skin barrier function is impaired due to the lack of filaggrin, a protein that helps to maintain the skin's natural moisture barrier. This can lead to dryness, itchiness, and increased susceptibility to infections.
**Correct Answer: C. Excoriations.