What anus bowel disease has the symptom of diarrhoea?

Anorectal diseases are a common and frequently occurring disease of human beings. According to the census data show that the incidence of hemorrhoids and other anorectal disease rate was 59.1%, accounting for all the hemorrhoids anorectal diseases in 87.2%, of which the internal hemorrhoids the most common, accounting for 52.19% of all anorectal diseases. The diarrhea is a common symptom, is significantly more than normal habit of defecation frequency, stool thin, water increased, the daily defecation of more than 200g, or contain undigested food or pus and mucus. Diarrhea often accompanied by defecation, urgency, anal discomfort, incontinence and other symptoms. Diarrhea can be divided into two categories: acute and chronic. Acute diarrhea is rapid and the course of disease is within 2~3 weeks. Chronic diarrhea means recurrent diarrhea in the course of two months or more within 2~4 weeks.
What anorectal diseases have diarrhea symptoms, diarrhea caused by many diseases, can be the primary intestine itself lesions, can also be secondary to other diseases outside the intestinal tract. Diarrhea caused by the intestinal itself is generally divided into two kinds of functional and temperamental.
The intestinal tract has no specific pathological changes. It is a functional diarrhea due to the chronic use of laxatives, certain allergic food and drug allergy, and autonomic nerve dysfunction. This type of diarrhea is usually painless, mucous diarrhea. No positive signs, no weight loss and anemia.
Temperament lesion refers to the diarrhea caused by the intestinal itself, and the common diseases causing diarrhea in the anorectal department are ulcerative colitis, Crohn's disease, diverticulum, intestinal tumor, and ischemic colitis. There are some special colitis, such as bacillary dysentery, amebic dysentery, intestinal tuberculosis and intestinal parasitic diseases, also have diarrhea symptoms.