Duodenal diverticulum alone is not serious and is overwhelmingly asymptomatic and does not require treatment. However, it can be combined with other conditions and present with epigastric discomfort such as abdominal pain, accompanied by nausea and belching, with recurrent episodes that worsen after eating. Vomiting of blood, black stools, fever and jaundice may also occur. Therefore, when the above symptoms occur, you need to go to the hospital promptly for a clear diagnosis by the doctor.