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</noscript></div><div class="main"><div id="ency_summary"><p>Enteritis is inflammation of the small intestine.</p></div><section><div class="section"><div class="section-header"><div class="section-title"><h2>Causes</h2></div><div class="section-button"><button type="submit" aria-controls="section-1" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-1"><p>Enteritis is most often caused by eating or drinking things that are contaminated with bacteria or viruses. The germs settle in the small intestine and cause inflammation and swelling.</p><p>Enteritis may also be caused by:</p><ul><li>An autoimmune condition, such as <a test="test" href="./000249.htm">Crohn disease</a></li><li>Certain medicines, including NSAIDS (such as ibuprofen and naproxen sodium) and cocaine</li><li>Damage from radiation therapy</li><li>Celiac disease</li><li>Tropical sprue</li><li>Whipple disease </li></ul><p>The inflammation can also involve the stomach (<a test="test" href="./001150.htm">gastritis</a>) and large intestine (<a test="test" href="./001125.htm">colitis</a>).</p><p>Risk factors include:</p><ul><li>Recent stomach flu among household members</li><li>Recent travel</li><li>Exposure to unclean water </li></ul><p>Types of enteritis include:</p><ul><li><a test="test" href="./000254.htm">Bacterial gastroenteritis</a></li><li><a test="test" href="./000224.htm">Campylobacter enteritis</a></li><li><a test="test" href="./000296.htm"><em>E coli enteritis</em></a></li><li><a test="test" href="./001652.htm">Food poisoning</a></li><li><a test="test" href="./000300.htm">Radiation enteritis</a></li><li><a test="test" href="./000294.htm">Salmonella enteritis</a></li><li><a test="test" href="./000295.htm">Shigella enteritis</a></li><li><em>Staph aureus</em> food poisoning </li><li>Non-bacterial infections such as viruses and protozoa</li></ul></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Symptoms</h2></div><div class="section-button"><button type="submit" aria-controls="section-2" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-2"><p>The symptoms may begin hours to days after you become infected. Symptoms may include:</p><ul><li>
Abdominal pain
</li><li>
Diarrhea -- acute and severe
</li><li>Loss of appetite</li><li>Vomiting </li><li>Blood in the stool</li></ul></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Exams and Tests</h2></div><div class="section-button"><button type="submit" aria-controls="section-3" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-3"><p>Tests may include:</p><ul><li>A <a test="test" href="./003758.htm">stool culture</a> culture or multiplex PCR to look for the type of infection. However, this test may not always identify the bacteria or other organisms causing the illness.</li><li>A colonoscopy and/or upper endoscopy to look at the small intestine and to take tissue samples if needed.</li><li>Imaging tests, such as CT scan and MRI, if symptoms persist. </li></ul></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Treatment</h2></div><div class="section-button"><button type="submit" aria-controls="section-4" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-4"><p>Mild cases of enteritis often do not need testing or treatment.</p><p>Antidiarrheal medicine is sometimes used.</p><p>You may need rehydration with <a test="test" href="./002350.htm">electrolyte</a> solutions if your body does not have enough fluids.</p><p>You may need medical care and fluids through a vein (<a test="test" href="./002383.htm">intravenous</a> fluids) if you have diarrhea and cannot keep fluids down. This is often the case with young children.</p><p>If you take diuretics (water pills) or an <a test="test" href="../patientinstructions/000087.htm">ACE inhibitor</a> and develop diarrhea, you may need to stop taking the medicines. However, do not stop taking any medicine without first talking to your health care provider.</p><p>You may need to take antibiotics.</p><p>People who have Crohn disease will often need to take anti-inflammatory medicines (not NSAIDs).</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Outlook (Prognosis)</h2></div><div class="section-button"><button type="submit" aria-controls="section-5" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-5"><p>Symptoms most often go away without treatment in a few days in otherwise healthy people.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Possible Complications</h2></div><div class="section-button"><button type="submit" aria-controls="section-6" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-6"><p>Complications may include:</p><ul><li>Dehydration</li><li>Long-term diarrhea </li></ul><p>Note: In babies, the diarrhea can cause severe dehydration that comes on very quickly. </p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>When to Contact a Medical Professional</h2></div><div class="section-button"><button type="submit" aria-controls="section-7" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-7"><p>Contact your provider if:</p><ul><li>You become dehydrated.</li><li>Diarrhea does not go away in 3 to 4 days.</li><li>You have a fever over 101°F (38.3°C).</li><li>You have blood in your stool</li><li>You have severe belly pain</li></ul></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Prevention</h2></div><div class="section-button"><button type="submit" aria-controls="section-8" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-8"><p>The following steps may help prevent enteritis:</p><ul><li>Always wash your hands after using the toilet and before eating or preparing food or drinks. You may also clean your hands with an alcohol-based product containing at least 60% alcohol.</li><li>Boil water that comes from unknown sources, such as streams and outdoor wells, before drinking it.</li><li>Use only clean utensils for eating or handling foods, particularly when handling eggs and poultry.</li><li>Cook food thoroughly.</li><li>Use coolers to store food that needs to stay chilled. </li></ul></div></div></section><section><div class="section sec-mb"><div class="section-header"><div class="section-title"><h2>Images</h2></div><div class="section-button"><button type="submit" aria-controls="section-tnails" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-Ref"><p>Fleckenstein JM. Approach to the patient with suspected enteric infection. In: Goldman L, Cooney KA, eds. <em>Goldman-Cecil Medicine. </em>27th ed. Philadelphia, PA: Elsevier; 2024:chap 262.</p><p>Lima AAM, Warren CA, Guerrant RL. Acute dysentery syndromes (diarrhea with fever). In: Bennett JE, Dolin R, Blaser MJ, eds. <em>Mandell, Douglas, and Bennett's Principles and Practice of Infectious Diseases.</em> 9th ed. Philadelphia, PA: Elsevier; 2020:chap 99.</p><p>Melia JMP, Sears CL. Infectious enteritis and proctocolitis. In: Feldman M, Friedman LS, Brandt LJ, eds. <em>Sleisenger and Fordtran's Gastrointestinal and Liver Disease.</em> 11th ed. Philadelphia, PA: Elsevier; 2021:chap 110.</p><p>Semrad CE. Approach to the patient with diarrhea and malabsorption. In: Goldman L, Cooney KA, eds. <em>Goldman-Cecil Medicine</em>. 27th ed. Philadelphia, PA: Elsevier; 2024:chap 126.</p></div></div></section>
<section><div class="section"><div class="section-header"><div class="section-title"><h2>Review Date 6/11/2024</h2></div><div class="section-button"><button type="submit" aria-controls="section-version" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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<div id="section-version" class="section-body"><p>Updated by: Jenifer K. Lehrer, MD, Department of Gastroenterology, Aria - Jefferson Health Torresdale, Jefferson Digestive Diseases Network, Philadelphia, PA. Review provided by VeriMed Healthcare Network. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team. </p>
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