Actually, there are two common types of inguinal hernias. Direct hernias and indirect hernias protrude from different locations. An indirect hernia protrudes from the lateral side of the inguinal canal and can extend into the scrotum. After reducing the hernia contents and pressing on the deep inguinal ring, the mass no longer protrudes. It usually has a pear - shaped appearance. A hernia that exits through this passage is called an indirect inguinal hernia. It is prone to incarceration and commonly occurs in young and middle - aged adults. A direct hernia protrudes from the Hesselbach's triangle. No matter how large or severe the protrusion is, it will not descend into the scrotum. After reducing the hernia contents and pressing on the deep inguinal ring, the mass can still protrude. It commonly affects the elderly. Incarceration rarely occurs, and it generally has a hemispherical shape.