Which of the following is NOT a symptom of bullous impetigo?

Bullous impetigo is a bacterial skin infection characterized primarily by the formation of large blisters or bullae on the skin. It typically presents with clear fluid-filled blisters that may become cloudy and can easily rupture, leading to the formation of crusted yellow lesions.

The option describing yellow serpentine blisters does not accurately reflect the presentation of bullous impetigo. In fact, the blisters of bullous impetigo are more just typically large, rounded, and filled with fluid rather than having a serpentine shape.

In contrast, crusted yellow lesions are indeed a relevant characteristic of bullous impetigo, occurring after the bullae rupture. Severe itching can also be associated with the condition, though it may not be as prominent. Red swollen areas can also be present as the skin becomes inflamed and infected.

Thus, the correct answer focuses on the fact that yellow serpentine blisters are not a classical symptom of bullous impetigo, distinguishing it from the other options that describe symptoms commonly associated with the condition.