What characterizes papules?

Papules are characterized as raised, solid lesions that measure less than 1 cm in diameter. They have a well-defined border and can appear in various colors, including red, brown, or skin-toned. This definition is essential in dermatology and skin assessments because it helps distinguish papules from other types of skin lesions.

In comparing this with other options, flat lesions larger than 1 cm typically refer to plaques, while fluid-filled blisters are described as vesicles or bullae. Small, dark spots on the skin could indicate various pigmentation issues or other dermatological conditions, but they do not share the defining characteristics of being raised and solid like papules. Therefore, understanding that papules are under 1 cm and raised is crucial for accurate identification and diagnosis in the context of skin disorders.