Proctitis

Proctitis is inflammation of the lining of your rectum, the final section of your large intestine before the anus. This condition can cause discomfort, pain, and changes in bowel habits. It often results from infections, inflammatory bowel disease, or radiation therapy, and its treatment depends on the underlying cause.

What is Proctitis?

Proctitis is a condition where the lining of your rectum becomes inflamed. The rectum is the lower part of your large intestine, a muscular tube that connects to your anus and holds stool before it leaves your body. This inflammation can lead to various uncomfortable symptoms, including pain, bleeding, and a frequent urge to have a bowel movement.

Inflammation means that the tissues in your rectum are irritated and swollen. This can happen for many reasons, affecting how your body stores and passes stool. When the rectum is inflamed, it may not work as it should. This can lead to difficulties with bowel movements and general discomfort. Proctitis can be short-term (acute) or long-lasting (chronic), depending on what is causing it. Understanding the cause is key to effective treatment.

Symptoms

Symptoms of proctitis often involve changes in bowel habits and discomfort in the rectal area. You might experience rectal pain, a persistent feeling of needing to pass stool even when your bowels are empty (tenesmus), or rectal bleeding. Other common signs include passing mucus or pus, diarrhea, or constipation.

Rectal bleeding is a common symptom. You might notice bright red blood on your toilet paper, in your stool, or in the toilet bowl. This bleeding can range from mild to more significant. The feeling of needing to pass stool, known as tenesmus, can be particularly bothersome. This urge may be strong and frequent, even if you have just had a bowel movement, and it can be accompanied by cramping. Some people also experience pain during bowel movements or a feeling of fullness in the rectum. In some cases, there might be a discharge of mucus or pus from the rectum, indicating inflammation or infection.

Causes & risk factors

Proctitis can be caused by various factors, including infections, inflammatory bowel disease, and radiation therapy. Risk factors often relate to these underlying causes, such as engaging in unprotected sex, having a history of inflammatory bowel disease (IBD), or undergoing radiation treatment to the pelvic area for certain cancers.

**Infections:** Many infections can lead to proctitis. These include sexually transmitted infections (STIs) like gonorrhea, herpes, chlamydia, and syphilis. Other bacteria, such as salmonella or shigella, can also cause it, sometimes from food poisoning. Certain viruses and parasites can also be culprits. **Inflammatory Bowel Disease (IBD):** Conditions like ulcerative colitis and Crohn's disease, which cause chronic inflammation in the digestive tract, can affect the rectum. Ulcerative proctitis is a form of ulcerative colitis limited to the rectum, causing inflammation and sores. **Radiation Therapy:** People who receive radiation therapy to the pelvic area, for example, for prostate or rectal cancer, can develop radiation proctitis. This can happen during treatment or even years later, as radiation can damage healthy cells in the rectal lining. **Other Causes:** Sometimes, antibiotics can disrupt the natural balance of bacteria in the gut, leading to an overgrowth of harmful bacteria like *Clostridioides difficile* (*C. diff*) that causes proctitis. Reduced blood flow to the rectum (ischemic proctitis) or a buildup of certain white blood cells (eosinophilic proctitis) are less common causes. Diversion proctitis can occur after surgery that reroutes stool away from the rectum, leading to inflammation in the unused rectal segment.

How it's diagnosed

Diagnosing proctitis typically involves a review of your medical history and a physical exam, including a digital rectal exam. To confirm the diagnosis and identify the cause, your doctor may perform a proctoscopy or sigmoidoscopy, which uses a thin, lighted tube to view the rectum. A small tissue sample (biopsy) may also be taken for further analysis.

During the physical exam, your doctor may gently check your rectum with a gloved finger (digital rectal exam) to feel for any abnormalities, tenderness, or masses. This initial step can provide important clues. A proctoscopy allows your doctor to see the lining of your rectum directly using a short, flexible tube with a camera. A sigmoidoscopy examines a slightly longer section of your lower colon. These procedures can help identify inflammation, bleeding, ulcers, or other changes in the rectal lining. To find the specific cause, your doctor might order additional tests. These can include stool tests to check for bacteria, viruses, or parasites, or blood tests to look for signs of inflammation or specific markers related to inflammatory bowel disease. Tests for sexually transmitted infections may also be done if suspected, especially if risk factors are present.

Treatment options

Treatment for proctitis depends entirely on its underlying cause. If an infection is present, antibiotics or antiviral medications are typically prescribed. For proctitis caused by inflammatory bowel disease, anti-inflammatory drugs, often given as enemas or suppositories, are common. Radiation proctitis may be managed with similar medications or sometimes with specialized procedures like laser therapy.

**For infections:** If bacteria are the cause, your doctor will prescribe antibiotics. For viral infections like herpes, antiviral medications are used. Treating the infection usually resolves the proctitis, and it's important to complete the full course of medication. **For inflammatory bowel disease (IBD):** Medications like aminosalicylates (e.g., mesalamine) or corticosteroids can help reduce inflammation. These are often given directly to the rectum as enemas or suppositories for better local effect. In some cases, oral medications or immunosuppressants may be needed to control the underlying IBD. **For radiation proctitis:** Treatment focuses on managing symptoms and reducing inflammation. This can involve anti-inflammatory medications, sometimes given rectally. Other treatments, such as laser therapy to stop bleeding or formalin application, may be used in persistent cases to cauterize bleeding vessels. **Other treatments:** For diversion proctitis, enemas containing short-chain fatty acids may be helpful. In rare cases, if other treatments fail or complications arise, surgery might be considered, though this is uncommon. Your doctor will tailor the treatment plan to your specific situation, aiming to alleviate symptoms and address the root cause.

Recovery & outlook

The recovery and outlook for proctitis vary greatly depending on its cause and how well it responds to treatment. Many cases, especially those caused by infections, resolve completely with appropriate medication. If proctitis is due to a chronic condition like inflammatory bowel disease or radiation effects, ongoing management may be necessary to control symptoms and prevent flare-ups.

For infectious proctitis, symptoms often improve quickly once the infection is treated. It's important to complete the full course of medication as prescribed by your doctor, even if you start feeling better, to ensure the infection is fully cleared. If your proctitis is part of a chronic condition like ulcerative colitis or Crohn's disease, the goal is to manage the inflammation and keep symptoms under control. This may involve long-term medication and regular follow-up appointments with your doctor to monitor your condition and adjust treatment as needed. Radiation proctitis can sometimes be more challenging to treat and may become chronic, with symptoms persisting for months or even years. However, various therapies can help manage the symptoms and improve your quality of life. Your doctor will discuss the most suitable long-term plan for you, focusing on symptom relief and preventing complications.

When to see a doctor

You should see a doctor if you experience any persistent rectal pain, bleeding, or significant changes in your bowel habits. Seek immediate medical attention if you have severe rectal pain, heavy rectal bleeding, a high fever, or signs of dehydration, as these could indicate a more serious condition or complication requiring urgent care.

Even mild or intermittent rectal bleeding should be evaluated by a healthcare professional to determine its cause. Do not assume it is always due to a minor issue, as it can sometimes be a sign of a more serious underlying condition. If you notice a discharge of pus or mucus from your rectum, or if you have a constant, urgent feeling of needing to pass stool that doesn't go away, it's important to get checked. These symptoms suggest ongoing inflammation or infection. Any new or worsening abdominal pain, unexplained weight loss, or persistent diarrhea also warrants a visit to your doctor. Early diagnosis and treatment can help prevent complications and improve your outcome, so do not hesitate to seek medical advice.

Frequently asked questions

Can proctitis be prevented?

Preventing proctitis depends on its cause. You can reduce your risk of infectious proctitis, especially from sexually transmitted infections (STIs), by practicing safe sex. If you have inflammatory bowel disease, following your doctor's treatment plan can help prevent flare-ups that might include proctitis.

Is proctitis contagious?

Proctitis itself is not contagious. However, if your proctitis is caused by an infection, particularly a sexually transmitted infection (STI), the underlying infection can be passed to others. The inflammation itself is a response to an irritant or disease, not something that spreads directly.

Can diet affect proctitis?

While diet doesn't directly cause most types of proctitis, certain foods might worsen symptoms for some people, especially if you have inflammatory bowel disease. Your doctor may suggest avoiding irritating foods or discuss a specific diet plan if it seems to affect your symptoms, helping to manage discomfort.

How long does proctitis last?

The duration of proctitis varies. If it's caused by an infection, it often resolves within days or weeks with proper treatment. Proctitis due to chronic conditions like inflammatory bowel disease or radiation therapy can be long-lasting and may require ongoing management to control symptoms.

Can proctitis lead to cancer?

Most types of proctitis do not directly lead to cancer. However, chronic inflammation, such as that seen in long-standing ulcerative colitis (a cause of proctitis), can increase the risk of colon cancer over many years. Regular screening is important if you have such a condition.

What is the difference between proctitis and hemorrhoids?

Proctitis is inflammation of the lining of the rectum, causing symptoms like pain, bleeding, and urgency. Hemorrhoids are swollen veins in the anus or lower rectum, which can also cause bleeding and discomfort but are not an inflammatory condition of the rectal lining itself. They are distinct conditions with different causes.

Sources

• MedlinePlus — Proctitis
• Mayo Clinic — Proctitis
• Cochrane Library — Proctitis