Hemorrhoids, also called piles, are enlarged or varicose veins of the anus and rectum. There are two types of hemorrhoids, external and internal, which can occur separately or in combination. A person could have a single hemorrhoid, or have several at the same time. External hemorrhoids develop under the skin just outside the opening of the anus. They are usually painful if they develop a clot thrombose , in which case they appear as very tender, circular, purplish bulges around the anal opening. Internal hemorrhoids are often present without causing any discomfort or even awareness of their existence.
The anus is the opening at the end of your anal canal. The rectum sits between your colon and anus and acts as a holding chamber for stool. When pressure in your rectum becomes too great, the internal ring of muscle called the anal sphincter relaxes to allow stool to pass through your anal canal, the anus, and out of your body. The anus consists of glands, ducts, blood vessels, mucus, tissues, and nerve endings that can be highly sensitive to pain, irritation, and other sensations. Depending on the cause, a swollen anus can feel warm, cause sharp or burning pain especially after a bowel movement , and even produce bleeding and pus.
Many conditions, including hemorrhoids and anal fissures, result in irritation and discomfort in the anal region. The anus is the external opening of the lower intestine. Fecal material collects in the rectum and is passed outside the body via the anal opening. If your intestines are giving you problems, you may be experiencing anal discomfort, too. There are a number of digestive health issues that can cause anal itch, pain, tenderness, and general anal discomfort.
The anus is that part of the intestinal tract that passes through the muscular canal of the pelvis and anal sphincters. It is the final orifice through which stool passes out of the body. In adults, the anus is 4 to 5 centimeters long. The lower half of the anal canal has sensitive nerve endings.