There are several conditions that need to be considered for a foreign body sensation in the anus. In the first case, if it occurs in early childhood, it is possible that the prolapse of the rectum is due to chronic constipation or consider whether there is a parasitic infection. If the need for deworming medication is confirmed, prolapse in young children can be palliated and the symptoms can be improved by adjusting the stool and the anal prolapse will recover as they get older. In adults, anal skin diseases should be considered, such as anal eczema, which can be treated with lotions or ointments, and anal warts, which can also be itchy and have wart-like growths and need to be treated with laser. The probability of parasitic infection in adults is low, but it cannot be ruled out completely. It is recommended that the anorectal clinic determine whether the specific lesion is internal or external to the anus, and then treat it symptomatically.