If a cyst becomes infected, it will manifest itself as local symptoms, for example, there will be localized cysts in the soft tissues of the surrounding skin, with the manifestation of acute inflammation with skin flushing, increased skin temperature, and swelling, pain, and other redness, heat, and pain. It is also possible to touch the local cysts where they float up more obviously and are very painful to press. In case of purulent infection, there may also be rupture and rupture of the skin on the surface of the cyst and pus flow, which may also cause other local or systemic symptoms. If the cyst in the lower limbs is infected, it may lead to enlarged and painful lymph nodes in the groin, and may also lead to generalized fever.