**Core Concept**
Bullous lesions are characterized by the presence of fluid-filled blisters on the skin. These lesions can result from various dermatological conditions, including autoimmune, infectious, or allergic etiologies.

**Why the Correct Answer is Right**
Atopic dermatitis, also known as eczema, primarily presents with non-bullous lesions such as erythema, papules, and lichenification. While atopic dermatitis can occasionally exhibit vesicular or bullous lesions, its characteristic skin manifestations do not typically include bullae. This is in contrast to pemphigus vulgaris, which is a classic example of a bullous autoimmune disorder. Dermatitis herpetiformis and pemphigoid are also bullous conditions, with dermatitis herpetiformis characterized by intensely itchy, vesicular lesions and pemphigoid presenting with tense, bullous lesions.

**Why Each Wrong Option is Incorrect**
**Option A:** Pemphigus vulgaris is a classic bullous autoimmune disorder that presents with flaccid, intraepidermal bullae.
**Option B:** Dermatitis herpetiformis is a chronic, blistering skin disorder that is often associated with celiac disease and presents with intensely itchy, vesicular lesions.
**Option D:** Pemphigoid is a group of chronic autoimmune diseases characterized by the presence of bullous lesions, including pemphigoid gestationis, bullous pemphigoid, and mucous membrane pemphigoid.

**Clinical Pearl / High-Yield Fact**
When evaluating patients with bullous lesions, it is essential to consider the distribution, size, and content of the blisters, as well as the patient's medical history and systemic symptoms. This can help narrow the differential diagnosis and guide further investigations.

**✓ Correct Answer: C. Atopic dermatitis**