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IBS can be classified as diarrhea-predominant (IBS-D), constipation-predominant (IBS-C), with mixed/alternating stool pattern (IBS-M/IBS-A) or pain-predominant. [104] In some individuals, IBS may have an acute onset and develop after an infectious illness characterized by two or more of: fever, vomiting, diarrhea, or positive stool culture .
Chronic conditions, such as irritable bowel syndrome or Crohn's disease, can cause severe diarrhea lasting for weeks or months. Diseases, drugs, and indigestible dietary fats that interfere with the intestineal absorption may cause steatorrhea (oily rectal discharge & fatty diarrhea) and
The condition is usually asymptomatic, but symptoms can include rectal discharge (which can be creamy, purulent or bloody), pruritus ani, tenesmus, and possibly constipation. When symptomatic, these usually appear 5–7 days post-exposure. [14] Discharge is the most common symptom, and it is usually a brownish mucopurulent consistency. [27]
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Rectal tenesmus is a feeling of incomplete defecation. [1] It is the sensation of inability or difficulty to empty the bowel at defecation, even if the bowel contents have already been evacuated. Tenesmus indicates the feeling of a residue, and is not always correlated with the actual presence of residual fecal matter in the rectum.
Rectal digitation is when patients insert a finger into the anus to "hook" out fecal pellets, [20] or to apply pressure to the walls of the anus and/or the rectum (distension of which may trigger a bowel movement), or to support an obstructing anatomic defect such as a sigmoidocele.
Fecal incontinence – paradoxical overflow diarrhea as a result of liquid stool passing around the obstruction; Abdominal pain and bloating; Loss of appetite; Complications may include necrosis and ulcers of the rectal tissue, which if untreated can cause death. [citation needed]
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