Which statement about atopic dermatitis is true?

Atopic dermatitis, also known as eczema, is characterized by its distribution and the morphology of its lesions. The statement noting that atopic dermatitis does not have a linear distribution is accurate. In most cases, atopic dermatitis presents in an irregular, patchy pattern rather than a straight-line or band-like pattern.

This irregular distribution is a significant distinguishing feature of atopic dermatitis, which can occur in various areas of the body depending on the age of the individual and specific triggers. In infants, for example, it often appears on the face and scalp, while in older children and adults, it can be seen in the creases of the elbows and knees.

While the condition can be affected by various irritants and allergens, it typically does not present as vesicles filled with serous exudate in all cases—those features may vary. The presence of lesions with bullae is not typical for atopic dermatitis, as this condition is more about dry, itchy patches rather than blistering. Therefore, the statement regarding the lack of linearity in the distribution of lesions provides a correct understanding of how atopic dermatitis typically manifests.