What causes anal pain during menstruation?

Aug 24, 2022 Source: Cainiu Health
Disease description:

During the past few menstrual periods, I've felt pain around the anus, although it only lasts a short while before easing. I'm too embarrassed to go to the hospital for an examination, so may I ask what might cause anal pain during menstruation?

Doctor's answer (1)
Dr. Mei Quan
Anal pain during menstruation may be caused by hemorrhoids or endometriosis. Additionally, hormonal changes during the menstrual period can affect the gastrointestinal tract, leading to bloating, increased bowel movements, or constipation in women, which may result in anal pain during defecation. This usually resolves on its own after menstruation ends. If the pain is due to hemorrhoids, it's important to maintain perianal hygiene and avoid pain caused by anal fissures, infections, or bleeding.