Duodenum pain is commonly caused by duodenal ulcers and duodenitis, and some common symptoms include a burning abdominal pain, nausea, vomiting and early satiety, according to Heathline. More severe symptoms include dark vomit and bloody stools.
Most duodenal ulcers are caused by a combination of lifestyle factors, stomach acids such as hydrochloric acid and pepsin, and a bacterial infection, according to Johns Hopkins Medicine. Ninety percent of duodenal ulcers involve a Helicobacter pylori bacterial infection. The most common symptom of a duodenal ulcer is a gnawing or burning pain in the abdomen between the breastbone and navel, occurring between meals and during the early morning. This pain may last a few minutes or a few hours. Other less common symptoms include belching, nausea, vomiting, loss of weight, poor appetite and fatigue.
Duodenitis involves inflammation of the duodenum, according to Healthline. When the more serious symptoms occur, they indicate internal bleeding from the duodenum. Patients should seek medical help when vomit has the appearance of used coffee grounds, or when stools are sticky black or bloody, according to the Medical University of South Carolina.
In some cases, a ruptured duodenal diverticulum can cause or present alongside duodenitis, according to MedicineNet. This occurs when a pouch develops on the duodenum and subsequently ruptures. Common symptoms include pain, fever and abdominal tenderness. As the symptoms of duodenum issues also resemble the symptoms of other medical conditions, it is important to consult a doctor for accurate diagnosis, according to Johns Hopkins Medicine.