What Are Common Causes of Leg Blisters?

Differential diagnosis of blisters (1) impetigo: it usually occurs around the nose and lips or exposed parts of the extremities. It is regarded as a herpes, followed by pustules, and then scabs. It does not appear in batches. It is not found in the mucosa and has no systemic symptoms . (2) Pimple-like urticaria: It is a fusiform edema-like red pimples, such as the size of peanuts, with pinpoint or millet-sized papules or blisters in the center. The palate is hard and itchy. It is distributed on the limbs or trunk, does not involve the head or mouth, and does not crust. (3) Herpes zoster: Herpes is distributed along certain neural trunk paths, is asymmetric, does not exceed the midline of the trunk, and has localized local burning pain.