An excessive thin plate of epidermal flakes, dry or oily, is known as a:

The term for an excessive thin plate of epidermal flakes, whether dry or oily, is known as a scale. Scales are typically formed as a result of a variety of skin conditions that promote the rapid shedding or abnormal growth of skin cells in the epidermis. They appear as fine, dry flakes on the skin's surface.

In contrast, a pustule refers to a raised, inflamed lesion filled with pus, often associated with acne or infections. A crust consists of a dried mixture of serum, pus, and dead cells that forms over a wound or lesion, while a keloid is a type of raised scar that results from an overproduction of collagen during the healing process. Understanding these definitions helps delineate the specific characteristics of each skin condition and clarifies how scales are identified as thin plates of flaking skin.