A nurse notices multiple lesions on a patient's left hand that are 0.5 cm in width, elevated, circumscribed, and filled with serous fluid. What kind of primary lesions are these?

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Vesicles are elevated, circumscribed, superficial (do not extend into dermis), filled with serous fluid, and less than 1 cm in diameter. This documentation tells the number and location of the lesions. Macules are flat, circumscribed areas that are a change in the color of the skin and are less than 1 cm in diameter. Patches are flat, nonpalpable, irregular-shaped macules greater than 1 cm in diameter. Bullae are large vesicles greater than 1 cm in diameter.

A Nurse Notices Multiple Lesions on a Patient's Left Hand