Constipation is a condition where stool movement is irregular and is characterized by hard stools, which often obstructs the movement of stools. Constipation is also categorized by some people as hardening and difficulty in passing stools. A sense of an incomplete bowel movement is also felt by many people that complain of constipation. The stiffening of stool near the rectum causes an obstruction for smooth stool passage, resulting in difficulty to defecate.
A disease is a particular abnormal, pathological condition that affects part or all of an organism. It is often construed as a medical condition associated with specific symptoms and signs. It may be caused by factors originally from an external source, such as infectious disease, or it may be caused by internal dysfunctions, such as autoimmune diseases. In humans, "disease" is often used more broadly to refer to any condition that causes pain, dysfunction, distress, social problems, or death to the person afflicted, or similar problems for those in contact with the person.