What is the difference between a papule and a plaque?

• A. A papule is smaller and raised, while a plaque is larger and flat-topped.
• B. A plaque is smaller and raised, while a papule is larger and flat-topped.
• C. Both are flat types of skin elevations.
• D. A papule is only found in the dermis while a plaque is on the surface.

Answer: (A)

The distinction between a papule and a plaque centers on their size and shape. A papule is characterized as being smaller, typically less than 1 centimeter in diameter, and is raised above the surface of the surrounding skin. This elevation can be due to various causes, including inflammation, infection, or other dermatological conditions.

In contrast, a plaque is larger than a papule, often exceeding 1 centimeter in diameter. Plagues are generally flat-topped and can have various shapes but are distinguished by their more extended surface area compared to papules. These lesions may also arise from different skin conditions, such as psoriasis or eczema.

Understanding these differences is crucial for accurate diagnosis and treatment in dermatology and helps healthcare professionals communicate about skin lesions effectively.