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"&amp;lt;p&amp;gt;The small and large intestines are the most common places for Crohn&amp;amp;#39;s disease to cause inflammation. Many people may mistakenly believe that it is only the &amp;lt;a href=&amp;quot;https://www.verywell.com/small-intestine-1942443&amp;quot; data-component=&amp;quot;link&amp;quot; data-source=&amp;quot;inlineLink&amp;quot; data-type=&amp;quot;internalLink&amp;quot; data-ordinal=&amp;quot;1&amp;quot;&amp;gt;small intestine&amp;lt;/a&amp;gt; that is affected. But the &amp;lt;a href=&amp;quot;https://www.verywell.com/what-is-the-colon-796819&amp;quot; data-component=&amp;quot;link&amp;quot; data-source=&amp;quot;inlineLink&amp;quot; data-type=&amp;quot;internalLink&amp;quot; data-ordinal=&amp;quot;2&amp;quot;&amp;gt;large intestine&amp;lt;/a&amp;gt; is also commonly affected in Crohn&amp;amp;#39;s disease, and about 20% of people have disease only in the large intestine (which is called Crohn&amp;amp;#39;s colitis). The most common form of Crohn&amp;amp;#39;s, which affects about 45% of patients, is called ileocolitis and does affect the last section of the small intestine (the ileum) and the large intestine. The second most common form, ileitis, affects about 35% of patients and affects the ileum. The classifications are mostly for the benefit of a treatment plan, and the type of Crohn&amp;amp;#39;s disease a patient has can change if other parts of the intestine become affected.\u00A0&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;One problem that many with IBD experience is &amp;lt;a href=&amp;quot;https://www.verywell.com/mouth-ulcers-aphthous-stomatitis-1943009&amp;quot; data-component=&amp;quot;link&amp;quot; data-source=&amp;quot;inlineLink&amp;quot; data-type=&amp;quot;internalLink&amp;quot; data-ordinal=&amp;quot;1&amp;quot;&amp;gt;aphthous stomatitis&amp;lt;/a&amp;gt;, which are ulcers in the mouth. It&amp;amp;#39;s estimated that 20 to 30% of people with Crohn&amp;amp;#39;s disease have this problem. The ulcers tend to occur when the Crohn&amp;amp;#39;s disease is active, but they can also occur during times of &amp;lt;a href=&amp;quot;https://www.verywell.com/what-is-an-ibd-flare-up-1942490&amp;quot; data-component=&amp;quot;link&amp;quot; data-source=&amp;quot;inlineLink&amp;quot; data-type=&amp;quot;internalLink&amp;quot; data-ordinal=&amp;quot;2&amp;quot;&amp;gt;remission&amp;lt;/a&amp;gt; as well. People with Crohn&amp;amp;#39;s disease may also experience other various problems in the mouth, such as inflammation of the lips or tongue. These are sometimes due to vitamin deficiencies. If there is a lot of vomiting, the enamel of the teeth could wear down, causing dental problems.&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;Crohn&amp;amp;#39;s disease in the &amp;lt;a href=&amp;quot;https://www.verywell.com/what-is-the-esophagus-1942409&amp;quot; data-component=&amp;quot;link&amp;quot; data-source=&amp;quot;inlineLink&amp;quot; data-type=&amp;quot;internalLink&amp;quot; data-ordinal=&amp;quot;1&amp;quot;&amp;gt;esophagus&amp;lt;/a&amp;gt; is rare and is only estimated to affect about 1% of patients. When the esophagus does become affected by Crohn&amp;amp;#39;s disease, it can lead to problems with swallowing and heartburn. If this type of Crohn&amp;amp;#39;s disease is suspected, tests such as an upper endoscopy might be done to look for inflammation or other complications such as strictures or fistulas.&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;In about 5% of patients with Crohn&amp;amp;#39;s disease, the stomach may be affected. The two types that affect the stomach are called jejunoileitis and gastroduodenal Crohn&amp;amp;#39;s Disease. In jejunoileitis, the middle part of the small intestine, which is called the jejunum. is also affected. In gastroduodenal Crohn&amp;amp;#39;s disease, the first part of the small intestine, the duodenum, is also inflamed. In some cases, these forms of Crohn&amp;amp;#39;s disease may initially be thought to be a &amp;lt;a href=&amp;quot;https://www.verywell.com/are-stomach-ulcers-caused-by-stress-and-diet-1942946&amp;quot; data-component=&amp;quot;link&amp;quot; data-source=&amp;quot;inlineLink&amp;quot; data-type=&amp;quot;internalLink&amp;quot; data-ordinal=&amp;quot;1&amp;quot;&amp;gt;stomach ulcer&amp;lt;/a&amp;gt;, only to later determine that it is actually Crohn&amp;amp;#39;s disease.\u00A0&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;The &amp;lt;a href=&amp;quot;https://www.verywell.com/what-is-the-perianal-area-1942412&amp;quot; data-component=&amp;quot;link&amp;quot; data-source=&amp;quot;inlineLink&amp;quot; data-type=&amp;quot;internalLink&amp;quot; data-ordinal=&amp;quot;1&amp;quot;&amp;gt;perianal area&amp;lt;/a&amp;gt; is the skin and the area around the anus. Crohn&amp;amp;#39;s disease affecting the perianal area is quite common. Some of the problems that can occur include perianal &amp;lt;a href=&amp;quot;https://www.verywell.com/abscess-defined-3157027&amp;quot; data-component=&amp;quot;link&amp;quot; data-source=&amp;quot;inlineLink&amp;quot; data-type=&amp;quot;internalLink&amp;quot; data-ordinal=&amp;quot;2&amp;quot;&amp;gt;abscesses&amp;lt;/a&amp;gt;, &amp;lt;a href=&amp;quot;https://www.verywell.com/what-is-a-fistula-1941776&amp;quot; data-component=&amp;quot;link&amp;quot; data-source=&amp;quot;inlineLink&amp;quot; data-type=&amp;quot;internalLink&amp;quot; data-ordinal=&amp;quot;3&amp;quot;&amp;gt;fistulas&amp;lt;/a&amp;gt;, anal &amp;lt;a href=&amp;quot;https://www.verywell.com/what-is-an-anal-fissure-1941775&amp;quot; data-component=&amp;quot;link&amp;quot; data-source=&amp;quot;inlineLink&amp;quot; data-type=&amp;quot;internalLink&amp;quot; data-ordinal=&amp;quot;4&amp;quot;&amp;gt;fissures&amp;lt;/a&amp;gt;, and &amp;lt;a href=&amp;quot;https://www.verywell.com/hemorrhoids-overview-and-symptoms-1941774&amp;quot; data-component=&amp;quot;link&amp;quot; data-source=&amp;quot;inlineLink&amp;quot; data-type=&amp;quot;internalLink&amp;quot; data-ordinal=&amp;quot;5&amp;quot;&amp;gt;hemorrhoids&amp;lt;/a&amp;gt;. An abscess is a collection of blood and pus, and as many as 85% of people with Crohn&amp;amp;#39;s disease may develop one during the course of their disease. Abscesses may lead to the development of a fistula, which is an abnormal connection between two organs or between the interior of the body and the skin. Two studies estimate that an anal fissure, which is a small tear in the anal canal, could affect anywhere between 44% and 85% of people with Crohn&amp;amp;#39;s disease. Hemorrhoids, while common in the general population, are not as prevalent in Crohn&amp;amp;#39;s disease.\u00A0&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;&amp;lt;sub&amp;gt;Source:&amp;lt;/sub&amp;gt;&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;&amp;lt;sub&amp;gt;Safar B, Sands D. &amp;amp;#34;&amp;lt;a href=&amp;quot;http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2780223/&amp;quot; data-component=&amp;quot;link&amp;quot; data-source=&amp;quot;inlineLink&amp;quot; data-type=&amp;quot;externalLink&amp;quot; data-ordinal=&amp;quot;6&amp;quot;&amp;gt;Perianal Crohn&amp;amp;#39;s Disease&amp;lt;/a&amp;gt;.&amp;amp;#34; &amp;lt;em&amp;gt;Clin Colon Rectal Surg&amp;lt;/em&amp;gt;. 2007 Nov; 20(4): 282\u2013293. doi: 10.1055/s-2007-991027 8 Oct 2015.&amp;lt;/sub&amp;gt;&amp;lt;/p&amp;gt;"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.verywell.com/crohns-disease-digestive-tract-1942594>