Final answer:
The rounded or irregularly shaped blisters containing seropurulent fluid greater than 1 cm could be a sign of impetigo, a skin infection characterized by vesicles, pustules, and bullae. The blisters in impetigo can rupture and form encrusted sores with a yellowish crust and exudate drainage. Impetigo is often found around the nose and mouth.
Step-by-step explanation:
The rounded or irregularly shaped blisters that contain seropurulent fluid and are larger than 1 cm in diameter could be indicative of a skin infection called impetigo. Impetigo is characterized by the formation of vesicles, pustules, and possibly bullae, often around the nose and mouth. Bullae are large, fluid-filled blisters that measure at least 5 mm in diameter. In impetigo, these blisters can rupture and become encrusted sores with yellowish crust and exudate draining from the base of the lesion.