Detailed information about Zollinger-Ellison syndrome (ZES), a rare digestive disorder.

Metabolic dysfunction-associated steatotic liver disease (MASLD) means that you have fat deposits inside your liver. These deposits may keep your liver from doing a good job of removing toxins from your blood.

An anal fistula is an abnormal opening in the skin near the anus. It leads to the inside of the anal canal in the colon.

Mesenteric ischemia is decreased or blocked blood flow to your intestine.

A percutaneous endoscopic gastrostomy (PEG) tube is a feeding tube surgically placed through your belly (abdomen) into your stomach.

Smoking can harm your digestive system in many ways. It weakens the sphincter and allows stomach acid to flow backward into your esophagus.

Pancreas transplantation is a type of surgery in which you receive a healthy donor pancreas. It is a choice for some people with type 1 diabetes.

Portal hypertension is high blood pressure of the portal vein, which is in your abdomen (belly). It collects nutrient-rich blood from your intestines and carries it to the liver for cleaning.

Your bile and pancreative juices flow through a duct that is opened and closed by a valve called the sphincter of Oddi. If this valve goes into spasm, you end up with severe belly pain.

If the rectum drops out of its normal place within the body and pushes out of the anal opening, the condition is called rectal prolapse.

Infectious esophagitis is swelling and irritation of your esophagus, set off by an infection.

The large intestine is 1 of the many important parts of your digestive tract. This is a series of organs that begins with your mouth and ends with your anus, the opening of your rectum.

Esophagitis is the irritation and inflammation of the lining of your esophagus, or food pipe. Because the lining of the esophagus is sensitive, many things can cause swelling and irritation.

An anorectal abscess is a collection of pus under the skin in the area of the anus and rectum.

Pancreatitis is inflammation of the pancreas. It can be caused by gallstones, alcohol consumption, and certain medicines, among other causes.

At 20 feet long, your small intestine is the longest part of the human digestive system. Most of the digestive process takes place there.

Many people are reducing or eliminating their dietary intake of gluten, a protein found in wheat, rye, barley, and some other grains. But only those who have celiac disease need to completely stop eating gluten.

Achalasia is a disease that makes it hard to eat and drink normally. It affects your esophagus, which is the swallowing tube that connects the back of your throat to your stomach.

Celiac disease is a digestive disorder that damages your small intestine and keeps it from absorbing the nutrients in food. A protein found in wheat, barley, and rye called gluten is what causes the damage to the intestinal tract.

If you're like most people, you may have gas, constipation, or heartburn every now and then.

An anal fissure is a small, painful tear in the lining of the anus. Anal fissures may hurt and bleed during or after a bowel movement, but about 90% heal without surgery.

When you think of allergic reactions, you likely picture itchy eyes and a runny nose. But an allergic reaction can happen in the esophagus--your food pipe--as well. Read on to learn more about eosinophilic esophagitis (EoE).

Gastroenteritis is when the stomach and intestines become inflamed. When it's caused by a type of bacteria, it’s called bacterial gastroenteritis.

The Bernstein test (esophageal acid perfusion test) is used to see if you have gastroesophageal reflux disease (GERD).

In blind loop syndrome, food is not able to follow the normal digestive route. Instead, it bypasses a section of your intestine.