Appendicitis is a painful swelling and infection of the appendix. It is a medical emergency. The appendix can burst or rupture. This is serious and can lead to more infection. If not treated, it can be fatal.

Biliary atresia is a rare liver disease that occurs in infants. It is often found shortly after birth. The disorder affects tubes in the liver called bile ducts. If not treated with surgery, it can be fatal.

Colic is when a healthy baby cries for a very long time, for no obvious reason. It is a common problem that affects some babies during the first 6 weeks of life.

Congenital liver defects are liver disorders that are present at birth. They are rare. These liver disorders usually block the bile ducts. This affects the flow of bile.

Constipation is when a child has very hard stools, and has fewer bowel movements than he or she normally does. It is a very common GI (gastrointestinal) problem.

Crohn's disease is when there is redness, swelling (inflammation), and sores along the digestive tract. It is part of a group of diseases known as inflammatory bowel disease or IBD.

Diarrhea is a common problem. It may last 1 or 2 days and go away on its own. If diarrhea lasts more than 2 days, your child may have a more serious problem.

Encopresis is when your child leaks stool into his or her underwear. It is also called stool soiling. It is most often because of long-term (chronic) constipation. Encopresis happens to children ages 4 and older who have already been ...

GERD, or gastroesophageal reflux disease, is a long-term (chronic) digestive disorder. It happens when stomach contents flow back up (reflux) into the food pipe (esophagus).

H. pylori (Helicobacter pylori) is a spiral-shaped germ (bacteria) that infects the stomach. It can damage the tissue in your child’s stomach and the first part of the small intestine (duodenum). This can cause redness and swelling ...

Hepatoblastoma is a very rare cancer. It’s a tumor that starts in the liver. The cancer cells are similar to fetal liver cells. It usually affects children less than 3 to 4 years of age.

Hepatitis is an inflammation of the liver. It can damage and destroy liver cells.

A hernia occurs when a part of the intestine pushes through a weakness in the belly (abdominal) muscles. A hernia in the groin area is called an inguinal hernia.

Intestinal malrotation is a birth defect. It happens when your baby’s intestinal tract doesn’t form as it should during pregnancy. Malrotation happens when your baby’s intestine doesn’t turn like it should.

Intussusception is a serious problem in the intestine. It occurs when one part of the intestine slides inside another part. The intestine then folds into itself like a telescope. This creates a blockage or obstruction. It stops food that...

Irritable bowel syndrome (IBS) is a long-term (chronic) disorder that affects the large intestine or colon. IBS causes painful belly (abdominal) and bowel symptoms.

Lactose intolerance is when the body can’t easily break down or digest lactose. Lactose is a sugar found in milk and milk products.

Meckel diverticulum is a small pouch in the wall of the intestine. It’s near where the small and large intestines meet. This condition is the most common birth defect of the digestive system. It happens to about 1 in 50 babies.

Necrotizing enterocolitis (NEC) is a serious illness in newborns. It happens when tissue in the large intestine (colon) gets inflamed. This inflammation damages and sometimes kills the tissue in your baby’s colon.

An omphalocele is a birth defect. It happens when your baby is forming during pregnancy. In this condition, some of your baby’s abdominal organs poke out (protrude) through an opening in the abdominal muscles. This area is in the ...

Pyloric stenosis is a problem that causes forceful vomiting. It affects babies from birth to 6 months of age. It can lead to dehydration. This condition is the second most common reason why newborns have surgery.

An ulcer is an open sore (lesion). It’s normally found on the skin or mucous membranes. A peptic ulcer is in the lining of the stomach or duodenum. A gastric ulcer is in the stomach. A duodenal ulcer is in the duodenum.

Ulcerative colitis is an inflammatory bowel disease (IBD). In this condition, the inner lining of your child’s large intestine (colon or bowel) and rectum gets inflamed. This inflammation often starts in the rectum and lower (sigmoid) ...

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.

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.

Alcoholic hepatitis is liver inflammation and damage cause by drinking too much alcohol over time.

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.

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

Appendicitis is a medical emergency that happens when your appendix becomes sore, swollen, and diseased.

Ascites is a condition that occurs when fluid collects in spaces in your belly. It can be painful and keep you from moving around comfortably. Ascites can set the stage for an infection in your belly. Fluid may also move into your chest ...