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Ulcerative Colitis – Symptoms, Causes, Types, Risk Factors, Complications & Prevention

Pace Hospitals

Ulcerative colitis meaning


Ulcerative colitis (UC) is an idiopathic (unknown reason) inflammatory disease of the colon that causes diffuse friability and superficial erosions on the colonic wall that are accompanied by haemorrhage (internal bleeding).


This is the most prevalent type of inflammatory bowel disease worldwide, typically affecting the colon's mucosa and submucosa, causing localised inflammation. The disease usually initiates in the rectum and progresses continuously inward (towards the colon). The disease severity can also vary histologically, ranging from mild to severe ulceration and dysplasia.


Adults are more likely to have ulcerative colitis than Crohn's disease. However, Crohn's disease and ulcerative colitis are less common compared to the paediatric population. Ages between 15 and 30 are when the initial onset peaks. Ulcerative colitis has an unknown precise cause, and a family history of the ailment is the most significant independent risk factor (8 % to 14 % of patients). The condition usually develops gradually, and individuals will probably go through periods of spontaneous remission before relapsing.

Types of ulcerative colitis

The types of ulcerative colitis are based on the following:

  • Location of the colon and rectum affected
  • Severity of ulcerative colitis 


Location of the colon and rectum affected

Based on the location of the colon and rectum affected, they are usually four types of ulcerative colitis as:

  • Ulcerative Proctitis
  • Left-Sided Colitis
  • Extensive Colitis (Pancolitis)
  • Proctosigmoiditis


  • Ulcerative Proctitis: In this type, the inflammation only occurs in the rectum (usually less than 6 inches), the final section of the large intestine. About one-third of those who have ulcerative colitis (UC) are affected by this type of ailment. The sudden need to defecate, pain and bleeding in the rectum are the symptoms of this condition.
  • Left-Sided Colitis: This type of ulcerative colitis can cause inflammation anywhere from the rectum to the splenic flexure of the colon (curve in the upper left portion of the abdomen, where the descending colon and transverse colon meet). Loss of hunger, left-side abdominal pain, bloody diarrhoea and loss of weight are the symptoms of this condition. 
  • Extensive Colitis (Pancolitis): This type of ulcerative colitis frequently affects the entire colon. The inflammation occurs from the rectum and extends past the splenic flexure. The symptoms include abdominal pain, loss of hunger, increased body temperature, cramps and bloody diarrhoea.
  • Proctosigmoiditis: This type of ulcerative colitis affects only the rectum and sigmoid colon, the bottom portion of the colon above the rectum. The symptoms include tenesmus, bloody diarrhoea, cramps and pain in the abdomen.


Severity of ulcerative colitis

Based on the disease severity or stages, it is graded as mild to moderate ulcerative colitis, such as:

  • Mild ulcerative colitis
  • Moderate ulcerative colitis
  • Severe ulcerative colitis


  • Mild ulcerative colitis: having four rectal bleeding episodes in a day.
  • Moderate ulcerative colitis: having more than four rectal bleeding episodes in a day.
  • Severe ulcerative colitis: having more than six rectal bleeding episodes in a day accompanied by hypoalbuminemia.



Fulminant Ulcerative Colitis

Fulminant ulcerative colitis is a rare yet dangerous form of ulcerative colitis, characterised by complete inflammation of the colon lining, leading to severe symptoms like stomach discomfort and bloody diarrhoea.


Most ulcerative colitis patients don't experience this, as it affects less than 10% of those who have it, typically during the initial episode of symptoms.

different types of ulcerative colitis | ulcerative colitis types

Severity of ulcerative colitis classification

Elements Mild Moderate Severe Fulminant
Stools (count/day) Less than 4 4-6 More than 6 More than 10
Presence of blood in stool Intermittent Between mild and severe Frequent Continuous
Haemoglobin Normal Normal Less than 75% of the normal value A blood transfusion is required
ESR rate (mm/hr) ≤ 30 ≤ 30 >30 >30
Temperature (degree Celsius) Normal Normal >37.5 >37.5
Clinical Signs Absence of abdominal tenderness NA (Unavailability of data) Presence of Abdominal tenderness Presence of Abdominal tenderness and distention

Ulcerative colitis causes

Etiology of ulcerative colitis


The ulcerative colitis causes are uncertain, and it is believed to be the outcome of any of the following causative factors:

  • Abnormal immune reactions
  • Environment
  • Genes


Abnormal immune reactions:

The body's immune system aids in providing a defensive mechanism against infections. In order to eliminate the infection's source, the white blood cells are typically released into the blood by the immune system to combat infections.

According to some researchers, ulcerative colitis is an autoimmune disease where the immune system misinterprets good bacteria (helps in digestion) in the colon as dangerous bacteria or infection and attacks the healthy tissue, resulting in inflammation and redness of the body tissue at the infected area.


Environment:

The likelihood of getting ulcerative colitis also appears to be influenced by the place of living. Researchers have looked into several environmental factors that may be connected to ulcerative colitis, including air pollution, medications, and particular diets.


Genes:

Sometimes, ulcerative colitis runs in families. Studies have demonstrated that individuals with ulcerative colitis may carry specific abnormal genes. However, researchers are unable to show a direct causal relationship between the abnormal genes and ulcerative colitis.

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Ulcerative colitis symptoms

The primary ulcerative colitis symptom is bloody diarrhoea with or without mucous. In addition, the following are the ulcerative colitis disease symptoms:

  • Tenesmus (a painful urge to pass stools without excreting stool)
  • Unable to hold stool
  • Pain in abdomen
  • General malaise
  • Decrease in body weight
  • Increase in body temperature
  • Loss of body fluids
  • Reduce hunger
  • Skin sores
  • Anaemia
  • Eye pain while exposed to bright light
  • Joint pain
  • Canker sores (mouth ulcers)
  • Vomiting and it's feeling
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Ulcerative colitis emergency symptoms

Even if the patient only has minor or moderate symptoms, serious problems can still develop. It's critical to recognise emergencies and seek urgent assistance, such as:

  • Rectal bleeding
  • Unable to take food or liquids for longer than 24 hours 
  • Increase in body temperature with chills or rigours
  • Loss of body fluids
  • Swooning (fainting)

Ulcerative colitis symptoms in females 

Although ulcerative colitis (UC) symptoms differ from person to person, they frequently have a comparable impact on both men and women. Nevertheless, in females, hormonal changes may cause UC symptoms to worsen during the menstrual cycle. Symptoms include: 

  • Irregular periods
  • Menstrual pain
  • Severe abdominal pain and diarrhoea

Ulcerative colitis risk factors

The presence of the following triggering factors can elevate the risk of having ulcerative colitis

  • Age: It is most likely to be in older age (>60 years) or between the ages of 15 and 30.
  • Family history: The presence of Ulcerative colitis in a family increases the risk by up to 30 %. There is a four-fold increased risk of acquiring ulcerative colitis in a first-degree relative of a patient.
  • Ethnicity: Jews experience ulcerative colitis more frequently than people of other races.
  • Medications: Consumption of birth control pills and broad-spectrum antibiotics can elevate the risk of UC.
  • Diet: Researchers believe westernised eating habits (low in fruits & vegetables and high in fat & sodium) or lifestyles may trigger factors causing Inflammatory bowel disease (IBD) symptoms.

Ulcerative colitis complications

The symptoms of ulcerative colitis remit and relapse throughout the course of a lifetime. Ulcerative colitis complications are broadly classified into two categories.

  • Extra-intestinal complications
  • Intestinal complications


Extra-intestinal manifestations of ulcerative colitis 

  • Osteoporosis
  • Growth and developmental problems in children
  • Sexual dysfunction
  • Anaemia
  • Erythema nodosum (painful bumps under the skin)
  • Pyoderma gangrenosum (painful sores on the skin)
  • Sacroiliitis (sacroiliac joint inflammation)
  • Joint pains
  • Peripheral arthritis
  • Gall stones
  • Sclerosing cholangitis (bile duct inflammation)
  • Mouth ulcers
  • Kidney stones
  • Hydronephrosis (swollen kidneys, build-up of urine)
  • Urinary tract infection
  • Episcleritis (inflammation of episcleral)
  • Uveitis (inflammation of the eye)
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Intestinal complications

  • Colorectal cancer
  • Fulminant ulcerative colitis
  • Large intestinal perforation
  • Severe rectal bleeding
  • Toxic megacolon
  • Faecal Incontinence (Inability to pass stool from the rectum)
  • Complications in females:
  • Anaemia 
  • Osteoporosis 
  • Delay in puberty
  • Sexual dysfunction
intestinal ulcerative colitis | intestinal manifestations of ulcerative colitis

Ulcerative colitis diagnosis

The gastroenterologist will ask about the patient's medical and family history, which includes medications, and jot down the patient's symptoms. The gastroenterologist would do a complete physical examination and would like to prescribe any or a combination of the following Ulcerative colitis tests.

  • Blood tests
  • Stool samples
  • Endoscopic tests
  • Imaging tests

Ulcerative colitis treatment

Ulcerative colitis treatment is based on the severity of the condition and frequency of symptoms flare up. The treatment includes medication and surgery.



The medication therapy is chosen based on the patient's condition, such as:

  • Aminosalicylates 
  • Corticosteroids 
  • Immunosuppressants 
  • Biological agents
  • JAK inhibitors 
  • Surgical applications include:
  • Ileoanal reservoir surgery
  • Ileostomy


Fulminant ulcerative colitis treatment 

Fulminant ulcerative colitis treatment includes intravenous (IV) corticosteroid medications as the first-line medication. In the event of corticosteroid ineffectiveness, the gastroenterologist would prescribe immunosuppressants or biologic agents. However, surgery (colectomy) might be an option if medication therapy fails to alleviate the symptoms.

Ulcerative colitis prevention

The root cause of ulcerative colitis is idiopathic (unknown), where some researchers believe it might be due to an autoimmune condition. Hence, it cannot be prevented. However, proper nutrition can play a significant role in disease control.


The following can aid in alleviating symptoms after making dietary changes.

  • Avoiding carbonated beverages
  • Avoiding high-fibre foods 
  • Increase fluid intake
  • Consuming food more frequently and less quantitatively
  • Maintaining a food diary to identify the triggering factors
  • Intake of probiotics (yoghurt, Kimchi etc.)

Ulcerative colitis remission 

  • Remission happens when Ulcerative Colitis drugs reduce or eliminate colon inflammation, which controls symptoms. Remissions can last anything from a few weeks or months to several years. 
  • The condition Ulcerative Colitis can stay in remission for a long time if the prescribed treatments are effective and no other factors trigger a flare-up.
  • It is crucial to continue taking the drugs even if Ulcerative Colitis is in remission for years in order to help avoid further flare-ups.

One should consult a medical professional if they experience a persistent change in their bowel habits or have the following signs and symptoms, such as:

  • Pain in the abdomen
  • Blood in stools
  • Diarrhoea unresponsive to over-the-counter (OTC) medications
  • Sleep disturbance due to diarrhoea
  • An unexplained fever that lasts more than 24 to 48 hours


Although ulcerative colitis is typically not deadly, it is a serious condition that can occasionally result in life-threatening complications.

Frequently asked questions, FAQs


  • Can ulcerative colitis be cured?

    There is no complete cure for ulcerative colitis through medical management; however, with strict adherence to diet and prescribed medications, symptoms will be reduced. In some cases (complex), surgery of the large intestine (colon and rectum) can aid in providing a cure.

  • How do you heal ulcerative colitis?

    Complete healing cannot be possible; however, following the below can aid in the reduction of symptoms such as

    • Daily exercise to improve bone density, reduce stress and increase body weight
    • Avoid foods with high-fat content, refined sugar, raw vegetables and animal products. 
    • Daily meditation and yoga to manage high-stress levels
    • Intake of omega-3 fatty acids and walnuts to reduce the symptoms
    • Timely intake of prescribed medications
    • Consuming frequent smaller meals, a day
    • Drinking plenty of fluids
  • What is ulcerative colitis diet?

    A low-residue diet or a low-fibre diet can alleviate the symptoms of ulcerative colitis. Low-residue diets are designed to aim to lessen the quantity and frequency of passage of stools.

    A low-residue diet can include a variety of items, such as:

    • Cooked vegetables
    • White rice
    • Low-fibre pasta and noodles
    • White bread
    • Refined cereals for breakfast
    • Eggs, lean meat and fish
  • Can ulcerative colitis cure itself?

    No, ulcerative colitis cannot be cured by itself. It is a progressive condition where the symptoms can be managed with medication therapy. Without therapy, symptoms could worsen, and inflammation might spread to the colon. In addition, with each flare-up, there is a risk of additional damage to the colon lining, making it harder for the patient to manage their disease.

  • Is olive oil good for ulcerative colitis?

    Yes, olive oil is good for ulcerative colitis. It consists of monounsaturated fats and antioxidants that have anti-inflammatory effects on the body. A research study reports consuming extra virgin olive oil reduced the symptoms of ulcerative colitis in 40 patients.


    Olive oil specifically decreased inflammatory indicators and markedly decreased ulcerative colitis symptoms such as difficulty passing the stools, incomplete bowel emptying, urgency in passing the stools, and bloating.

  • Can ulcerative colitis be misdiagnosed?

    Yes, ulcerative colitis can be misdiagnosed with irritable bowel syndrome, bacterial infections, or Crohn's disease, as the symptoms appear to be similar. However, prescribing more than one diagnostic test or taking a biopsy sample can aid gastroenterologists in the appropriate diagnosis of ulcerative colitis.

  • What is the treatment for ulcerative colitis?

    Surgery or drug therapy is typically used to treat ulcerative colitis. The treatment choice is based on the severity of the condition, and the benefits outweigh the risk, as certain drugs may be effective for some people but not for others.


    Drug therapy usually consists of anti-inflammatory agents, immunosuppressors, biologic agents, anti-diarrheal, antispasmodics, iron supplements and painkillers. Surgery (proctocolectomy and ileoanal anastomosis) can be an option if the condition of the patient is not managed with the medication.

  • Why there is no cure for ulcerative colitis?

    Ulcerative colitis is an autoimmune condition that has a relapsing and remitting nature, which means that it alternates between periods of flare-ups and remission. Therefore, it cannot be cured completely with medical management. However, complete removal of the large intestine (a surgical procedure) can be the only way to cure ulcerative colitis.

  • Why is ulcerative colitis painful?

    Ulcerative colitis (UC) is painful because it is characterized by chronic inflammation in the colon, which leads to the development of open sores or ulcers in the inner lining of the colon and rectum. The inflammation and ulcers can cause varying levels of pain, including abdominal cramping and mild to severe pain in the abdomen and rectum. The level of pain can indicate the severity of the disease and whether it is flaring up. Gas pain, bloating, and tenderness in the affected areas may also contribute to the pain experienced by individuals with UC.


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