Final answer:
A small, pus-filled abscess is commonly known as a furuncle or boil, and when several combine, they form a carbuncle.
Step-by-step explanation:
A small, pus-filled abscess often referred to as a pimple or spot, can also be termed medically as a furuncle or boil when it involves a hair follicle, or simply an abscess in other contexts. These lesions are a result of bacterial infection, most commonly involving the bacteria Staphylococcus.
When multiple boils coalesce into a deeper, severe infection, it is known as a carbuncle, which is often associated with systemic symptoms like fever and malaise and typically requires medical treatment including drainage and antibiotics. The process of suppuration refers to the production of pus, which occurs as a response to the infection.
Upon examination of pus under a microscope, healthcare professionals can discern various types of bacteria to determine the nature of the infection. Gram staining, for instance, can reveal if bacteria are Gram-positive, like Staphylococcus, or Gram-negative. This can guide effective treatment.