The relief of anal swelling depends on the cause of the swelling, e.g.
haemorrhoids, which can be treated with warm sitz baths, topical application of haemorrhoid cream or haemorrhoid plugs to the anus and, if necessary, surgery
proctitis, which may be treated with anti-infective therapy
perianal infections such as perianal abscesses and sinusitis, which can be treated with anti-infective and surgical treatment.
Therefore, all forms of relief should be based on a clear etiology.