Which type of lesion would vesicles and pustules belong to?

Vesicles and pustules are classified as primary lesions because they represent the initial stage of skin changes that occur in response to various underlying conditions. Primary lesions often appear as the first manifestation of disease processes and include structures that are directly related to the condition affecting the skin.

Vesicles are small, fluid-filled sacs that can develop due to infections, allergies, or other inflammatory processes. Pustules, on the other hand, are similar but contain pus and often result from infections or inflammatory conditions, like acne. Understanding their classification as primary lesions is essential for proper diagnosis and treatment, as it helps differentiate between the original manifestations of skin issues and secondary changes that may occur due to scratching, infection, or healing processes.