A fluid-filled blister greater than 1 cm in diameter containing clear exudate is referred to as what?

A fluid-filled blister greater than 1 cm in diameter containing clear exudate is known as a bulla. This term is used in dermatology to describe larger blisters that are filled with serous fluid, distinguishing them from smaller vesicles, which are typically less than 1 cm in size.

Understanding the sizes and types of blisters is important in clinical settings for diagnosis and management of skin conditions. Vesicles are similar but are characterized by their smaller size. Pustules, on the other hand, are blisters filled with pus and indicate infection or inflammation, while a furuncle, commonly known as a boil, is a deep folliculitis or infection of the hair follicle, which is distinct from a simple fluid-filled blister. This knowledge helps healthcare providers communicate effectively about skin lesions and their significance in various medical conditions.