What are vesicles typically described as?

Vesicles are typically described as small, fluid-filled blisters that can arise in various conditions, such as infections, allergic reactions, or skin diseases. They are characterized by their thin walls and contain clear or straw-colored liquid. This definition aligns with the nature of vesicles, as their formation involves the accumulation of fluid between the layers of the skin or mucous membranes.

In contrast, pus-filled blisters are indicative of infections and would be classified as pustules, not vesicles. Solid tumors are fundamentally different from vesicles since they consist of abnormal growths of tissue, while excess fluid accumulations in tissues refer more broadly to edema rather than a specific blister-like structure. Recognizing the distinction between these terms is important for understanding dermatological terminology and pathology.