The Anus
- What is the anus?
The anus is the opening at the end of the large bowel, located in the middle of the bottom. It is often called the bumhole. Stools pass through the anus when leaving the body. The bowel (colon and rectum) and anus are part of the digestive system.
The anal canal is about 3 to 4cm (1 to 1½ in) long. It connects the anus to the rectum. The area where the anus opens at the lower end is called the anal margin or anal verge.
The anus has a ring of muscle called the external sphincter, this muscle helps to control when you empty your bowels.
The walls of the anal canal are lined with cells make mucus, this helps poo pass through the anus.
- Is my anus normal?
A healthy anus should look like even and circular with clear transition between the external skin and the "anal mucosa," aka the inner lining of your anus. Just like any other body part, appearances can vary e.g. some may be darker, or more hairy than others. This is normal, the important thing is to know what is normal for you and look out for changes.
There should be no visible cuts or lesions.
If you are experiencing any of the following, we recommend speaking to your GP.
• A visible crack in the skin of the anus
• Bleeding after bowel movements, with or without pain
• Diarrhoea or constipation
• Gas and bloating
• Itching or burning in the anal area
• Lumps or swelling within and around the anal area
• Pain during or after a bowel movement
- How do I keep my anus healthy?
• Keep the anal area clean by washing with water every day. Don’t use soaps as they will reduce the natural oils that protect the anus and may make the area dry and itchy. Use aqueous cream or a soap-free cleanser instead.
• Avoid vigorous wiping with toilet paper because this may cause further chafing of the skin, which can become inflamed or infected.
• Avoid cleansing wipes or chemicals.
• Don't put off the urge to go to the toilet.
• Try not to strain when going to the toilet as this can irritate the anal area and lead to serious complications. Don’t sit on the toilet for more than a few minutes.