Final answer:
Inguinal hernias are the most prevalent type of groin hernias, with indirect inguinal hernias being more common. They present as a bulge in the groin, often influenced by abdominal pressure, and may extend into the scrotum.
Step-by-step explanation:
Inguinal hernias account for 96% of all groin hernias. Among them, indirect inguinal hernias are more common. They typically present as a bulge in the groin that may extend into the scrotum. The swelling may increase with activities that raise abdominal pressure such as coughing, lifting, or standing and may decrease when lying down. This type of hernia can occur at any age but is most common in infants and young children due to the presence of a patent processus vaginalis, which is a pathway that typically closes soon after birth but remains open in those with an indirect hernia.