Rectal discharge may have several causes, often linked to digestive health or infection. The most frequent include:
- Hemorrhoids
Hemorrhoids are swollen blood vessels in and around the rectum and anus. They may produce discharge if irritated, and this can be mucus or blood. Other related symptoms include itching, discomfort, pain, and sometimes swelling or lumps near the anus.
- Anal Fissures
Small tears or cracks in the lining of the anus can cause pain, bleeding, and mucus discharge, especially during bowel movements. Fissures usually result from passing hard stool or chronic constipation.
- Inflammatory Bowel Disease (IBD)
Conditions like Crohn’s disease and ulcerative colitis cause chronic inflammation of the digestive tract. Patients may experience mucus or blood in stool, diarrhea, abdominal pain, and frequent urge to pass stool.
- Infections (Including Sexually Transmitted Infections)
Rectal discharge may be a sign of infections. Bacterial, viral, or parasitic infections such as chlamydia, gonorrhea, herpes, or syphilis can all affect the anal and rectal area. These are often seen in people engaged in receptive anal intercourse, but may occur otherwise as well. Infectious discharge can appear alongside pain, itching, and sometimes ulcers.
- Rectal Prolapse
In rectal prolapse, the rectal wall drops through the anus, leading to mucus-like or bloody discharge and discomfort. Older adults or those with chronic constipation are most at risk.
- Proctitis
Proctitis is inflammation of the rectum, which may result from IBD, infections, radiation therapy, or surgery. Symptoms include persistent urge to defecate, pain, blood or mucus in stool, and sometimes diarrhea.
- Anal Abscess or Fistula
An abscess is a pus-filled cavity near the anus, which may burst and lead to purulent discharge. A fistula is an abnormal tract between the rectum and skin, resulting in chronic leakage of pus or fecal fluid.
- Irritable Bowel Syndrome (IBS)
IBS is a functional disorder that can cause mucus discharge, especially in those with diarrhea-predominant symptoms. It is typically associated with abdominal pain and changes in bowel habits.
- Colorectal Cancer & Polyps
Though less common, tumors or polyps in the rectum can cause bloody or mucous discharge, often with other warning signs like persistent pain, changes in bowel movements, or weight loss.