Anal swelling is generally not self-healing; it can be caused by a variety of factors and must be treated in a targeted manner in order to heal.
Perianal diseases, for example, including haemorrhoids, perianal abscesses and rectal polyps, can cause symptoms to worsen and even cause rectal prolapse and fistula if not treated promptly, and should be treated promptly if they are tumourous. Delayed treatment of gynaecological diseases, such as cervical cancer, can even affect survival.
Therefore, when anal swelling occurs and the cause is clear, it is important to treat it promptly and not to hope for a self-cure.