What is a bleb?

A bleb is defined as a large flaccid vesicle, which means it is a fluid-filled sac that can form in various tissues of the body. These vesicles are often formed due to the accumulation of fluid under the skin or within cells, and they can vary in size. The term "bleb" is commonly used in medical contexts, particularly in dermatology and pathology, to describe such fluid-filled structures.

Understanding that a bleb is essentially a blisters-like formation helps clarify its clinical significance. They can be seen in conditions such as blisters resulting from burns or in certain skin diseases. The characteristics of being large and flaccid (soft and pliable) are key to distinguishing a bleb from other types of growths or lesions. Thus, recognizing the unique properties of a bleb aids in diagnosis and can influence treatment decisions in clinical practice.