Final answer:
A palpable solid lesion less than or equal to 0.5 cm in diameter is referred to as a papule. It differs from other skin lesions such as macules, plaques, and bullae based on size and physical characteristics.
Step-by-step explanation:
A palpable solid lesion that is less than or equal to 0.5 cm in diameter is known as a papule. This term refers to a small, elevated, solid bump that can be felt upon examination. It stands in contrast to other types of skin lesions, such as:
- A macule, which is a flat, discolored area on the skin and is not elevated or palpable.
- A plaque, which is a flat, elevated area on the skin that is larger than 0.5 cm in diameter.
- Bullae, which are fluid-filled blisters that are more than 0.5 cm in diameter.
Since a papule is less than or equal to 0.5 cm in diameter and solid, it is the correct answer among the options provided.