Constipation is a condition in which a person's bowel movements become uncomfortable or less frequent than usual. Acute constipation begins suddenly and noticeably. Chronic constipation may begin slowly and last for months or years.
The role of the digestive system is to extract nutrients from the food a person eats and prepare the leftover material for disposal. This leftover material passes through at least 20 feet of intestine before being stored temporarily in the colon, where water is removed. Finally, this fecal residue is excreted as a bowel movement.
The frequency of bowel movements considered normal varies from person to person. "Normal" may range from movements 3 times a day to 3 times a week.
Constipation is not an illness, but it may be a symptom of another problem.
This condition can be caused by:
Acute constipation may be caused by a serious problem, such as a blockage or poor blood supply to the large intestine, or nerve and spinal cord injury.