Final answer:
A perianal abscess is an obstruction of the perianal glands presenting with perianal pain, swelling, and drainage of purulent material. Treatment typically involves surgical drainage, antibiotics if necessary, and pain management.
Step-by-step explanation:
A perianal abscess is an obstruction of the perianal glands, cryptoglandular in origin. It commonly presents with cardinal signs such as perianal pain and swelling, as well as the spontaneous drainage of purulent material. Treatment involves prompt and adequate drainage of the abscess, often performed surgically. In addition to drainage, antibiotics may be prescribed if there is evidence of an associated cellulitis or systemic infection. Pain management is also an important aspect of care. In some cases, especially for recurrent abscesses, the underlying fistulas may need to be addressed with further surgical interventions.