Gastroenteritis vs Colitis: Causes and Symptoms
Gastroenteritis vs Colitis: Causes and Symptoms Gastroenteritis, commonly known as stomach flu, involves inflammation of the stomach and intestines caused by viral or bacterial infections. Symptoms include diarrhea, vomiting, abdominal pain, and fever. In contrast, colitis refers to inflammation of the colon, often resulting from infections, autoimmune disorders, or inflammatory bowel disease. Its symptoms typically include abdominal pain, bloody diarrhea, fatigue, and weight loss.
Although gastroenteritis and colitis share some similarities, it’s important to distinguish between them for proper treatment. Gastroenteritis is usually acute and self-limiting within a few days, while colitis is a chronic condition that necessitates ongoing management and may cause complications if untreated.
At Acibadem Healthcare Group, we understand the critical role of precise diagnosis and tailored treatment for gastrointestinal issues. Our experienced specialists are committed to delivering comprehensive care for conditions like gastroenteritis, colitis, and other digestive disorders. In the following sections, we’ll explore each condition’s causes, symptoms, treatment options, and prevention methods.
What is gastroenteritis?
Gastroenteritis, often called stomach flu, involves inflammation of the stomach and intestines. It is primarily caused by viral or bacterial infections, but can also result from parasites or toxins (Alexander, 2021).
Gastroenteritis can be caused by several factors, including: Gastroenteritis vs Colitis: Causes and Symptoms
- Viral infections like norovirus and rotavirus commonly cause gastroenteritis, spreading easily through contaminated food, water, or surfaces.
- Bacterial infections such as Salmonella, E. coli, and Campylobacter often cause gastroenteritis, typically spread via contaminated food, water, undercooked meat, or poor hygiene during food preparation.
- Parasitic infections such as Giardia and Cryptosporidium can trigger gastroenteritis, typically acquired through drinking contaminated water.
- Consuming toxins from bacteria like Staphylococcus aureus or Bacillus cereus can lead to gastroenteritis.
Gastroenteritis symptoms include:
- Diarrhea: Gastroenteritis frequently causes frequent, watery stools.
- Vomiting, along with nausea, is a typical sign of gastroenteritis.
- Abdominal pain: Cramp-like discomfort is common in those with gastroenteritis.
- Fever: Mild to moderate fever is commonly associated with gastroenteritis.
Gastroenteritis treatment primarily aims to relieve symptoms and prevent dehydration, typically involving: Gastroenteritis vs Colitis: Causes and Symptoms
- Hydration: Consuming ample fluids like water, electrolyte drinks, and herbal teas to restore fluids and avoid dehydration.
- Medication: Over-the-counter remedies can help alleviate symptoms such as diarrhea, nausea, and fever, but it’s essential to consult a healthcare provider before use.
- Dietary modifications, such as eating bland and low-fat foods, avoiding spicy and fatty dishes, and slowly reintroducing solids, can support recovery.
To avoid gastroenteritis, maintaining proper hygiene is essential. Gastroenteritis vs Colitis: Causes and Symptoms
- Wash hands often with soap and water, particularly before eating and after bathroom use.
- Stay away from people showing signs of gastroenteritis.
- Make sure food is cooked, stored, and handled correctly to prevent bacterial contamination.
- Drink clean, safe water and exercise caution when visiting areas with inadequate sanitation.
Knowing the causes, symptoms, treatments, and prevention strategies for gastroenteritis enables individuals to proactively safeguard their digestive health (Jones, 2022).

What exactly is colitis?
Colitis is the inflammation of the colon, also called the large intestine, which is vital for digestion. When inflamed, it can cause various symptoms and discomfort.
Colitis can result from several factors, including infections, autoimmune conditions, and inflammatory bowel disease (IBD). Bacterial or viral gastroenteritis may cause inflammation in the colon, while autoimmune disorders like ulcerative colitis and Crohn’s disease lead to chronic colonic inflammation.
Causes of Colitis:
Gastroenteritis vs Colitis: Causes and Symptoms Infections: Bacterial or viral agents like Clostridium difficile and E. coli can cause colitis, resulting in diarrhea, abdominal pain, and fever.
2. Autoimmune Diseases: Conditions such as ulcerative colitis and Crohn’s disease are forms of inflammatory bowel disease (IBD) characterized by persistent inflammation of the colon caused by an immune system attacking its lining.
3. Ischemic Colitis: Decreased blood flow to the colon results in ischemic colitis, causing inflammation. This may happen due to narrowed arteries or blood clots.
Microscopic colitis involves inflammation in the colon that may not be visible during standard endoscopy. It is commonly linked to persistent, chronic diarrhea.
5. Medications: Some drugs, including NSAIDs and antibiotics, may lead to colitis by disturbing the gut bacteria or irritating the digestive system.
Colitis may cause a range of symptoms, such as:
- Stomach ache or cramps
- Diarrhea frequently containing blood or mucus
- Feeling the immediate need to defecate
- Exhaustion
- Unexpected weight reduction
Treatment Options for Colitis:
Successful colitis management relies on diagnosing its root cause and customizing the treatment plan. The following options may be considered:
- Medications: Corticosteroids and immune-modulators are often prescribed to decrease colon inflammation, while antibiotics may be used if an infection is present.
- Lifestyle changes, including avoiding trigger foods, eating more fiber, managing stress, and exercising regularly, can help reduce inflammation and support colon health.
- Surgery may be required in severe colitis cases to excise the damaged colon, especially when other treatments fail or complications like obstruction or perforation occur.
Preventing Colitis Flare-Ups:
Gastroenteritis vs Colitis: Causes and Symptoms Although colitis flare-ups cannot be entirely prevented, some methods can reduce their occurrence and intensity.
- Stick to your prescribed treatment plan by taking medications as directed and making any recommended lifestyle changes.
- Follow a healthy, fiber-rich diet and avoid trigger foods to support gut health and reduce symptoms.
- Reduce stress by practicing relaxation techniques like mindfulness and meditation, as stress can worsen colitis symptoms.
- Keep hydrated by drinking enough water to support proper digestion and overall health.
- Consistent monitoring: Track your symptoms regularly and inform your healthcare provider of any changes to catch flare-ups early and avoid complications.
Treatment Strategies for Colitis:
| Treatment | Description |
|---|---|
| Medication | Anti-inflammatory drugs, such as corticosteroids and immune-modulating medications, are prescribed to reduce inflammation in the colon |
| Lifestyle Modifications | Dietary changes, stress management, and exercise can help manage symptoms and reduce inflammation |
| Surgery | In severe cases, surgery may be necessary to remove the affected portion of the colon |
Main Differences Between Gastroenteritis and Colitis
Gastroenteritis and colitis are frequently mistaken for each other because of their similar symptoms, but several important differences distinguish them, aiding in proper diagnosis and treatment.
Gastroenteritis:
Gastroenteritis, or stomach flu, mainly impacts the stomach and intestines. It is often caused by viral or bacterial infections like norovirus or E. coli. Key symptoms include:
- Feeling sick and throwing up
- Loose stools
- Stomach ache or cramps
- Elevated body temperature









