Ace the Ink: Oregon Tattoo Artist Challenge 2026 – Master the Needles!

A vesicle is defined as a small, fluid-filled blister that measures less than 1 cm in diameter. This type of lesion is typically superficial and can be seen in various skin conditions, including herpes simplex virus infections, contact dermatitis, and other dermatoses. Vesicles are filled with clear fluid and can appear on their own or in groups on the skin.

In contrast, a pustule contains pus and is often associated with infections or inflammatory conditions. A bulla is similar to a vesicle but is larger, typically greater than 1 cm in diameter. A scale is a flaky or dry piece of skin that is not fluid-filled, representing a different type of skin lesion entirely. Understanding these distinctions is crucial for accurate identification and treatment of skin conditions.