Anal atresia
Anal atresia: Congenital absence of an opening at the bottom end of the intestinal tract. Also called imperforate anus. Occurs in about 1 in 5,000 births. It is corrected by surgery.
Atresia refers here to the absence of a normal opening.
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- Anal fissure
A tear in the anal canal, one of the most common causes of red blood in the stool.
- Anal fissure
A tear in the anal canal, one of the most common causes of red blood in the stool.
- Anal fistula
Anal fistula: An opening in the skin near the anus that leads into a blind pouch or may connect through a tunnel with the rectal canal.
- Anal incontinence
Anal incontinence: Inability to hold feces in the rectum. This is due to failure of voluntary control over the anal sphincters. This failure results in the untimely passage of feces and gas. There are many causes of anal incontinence, including congenital disorders of the spinal cord or anus; subsequent injuries to the rectum and anus; […]
- Anal itching
Irritation of the skin at the exit of the rectum, accompanied by the desire to scratch. The intensity of anal itching is increased by moisture, pressure, and abrasion caused by clothing and sitting. It may be caused by irritating chemicals in food (as in spices, hot sauces, and peppers); irritation due to frequent liquid stools, […]