Final answer:
A deep pus-filled lesion caused by Staphylococcus aureus is known as a furuncle or boil. It's a deep infection starting in a hair follicle, and while good hygiene can help prevent it, severe cases might require medical intervention.
Step-by-step explanation:
A deep pus-filled lesion caused by Staphylococcus aureus is called a furuncle. This type of infection, often referred to as a boil, is a purulent skin infection that usually starts in a hair follicle and can spread to surrounding tissue. Furuncles are typically larger and deeper than conditions like folliculitis, which is a more superficial infection of the hair follicles. While impetigo is also a skin infection caused by Staphylococcus aureus, it is different in appearance, characterized by vesicles, pustules, or bullae, especially around the mouth. Factors such as contact sports, poor nutrition, or weakened immunity can contribute to the development of furuncles.
Good hygiene and skin care are preventive measures, but if a furuncle becomes more infectious, medical treatment may be necessary. This could include draining and antibiotics, especially since strains of S. aureus can be drug-resistant, like MRSA (methicillin-resistant Staphylococcus aureus).