Ferritin has a role in storing iron and is found in almost all tissues of the body, especially in hepatocytes and reticuloendothelial cells. In general, enteritis can cause elevated ferritin. In patients with enteritis, during the active phase of the disease, the stimulation of the inflammatory response can cause the body to synthesize more ferritin, which can lead to elevated ferritin; if the disease is more serious, such as duodenal inflammation, the inflammation can appear to spread, and the inflammatory cells and pathogenic bacteria can be spread through the bloodstream or spread directly to the liver, which causes the hepatocytes to synthesize and secrete ferritin and isoferritin, which can also lead to elevated ferritin. Elevated ferritin is caused by increased sources of ferritin or the existence of obstacles to its removal. For example, when suffering from lung cancer, hepatocellular carcinoma, pancreatic cancer, leukemia and other diseases, the synthesis of ferritin by the cancer cells increases, causing elevated ferritin in the serum, which can lead to symptoms such as vague pain in the hepatic region or intermittent dull pain, loss of appetite, and weakness of the limbs. Patients with enteritis are advised to seek timely medical attention and targeted treatment under the guidance of a doctor.