Pain around the belly button in children may be due to mesenteric lymphadenitis, but also to intestinal flatulence, food allergies, and enteritis. Mesenteric lymphadenitis is particularly likely to occur in infants and children, usually with a history of upper respiratory tract infection 1-2 weeks prior to onset. Then the patient will often have pain around the navel, which is mild in nature and can be relieved by rest or during abdominal massage, and after a period of time the pain reoccurs, possibly accompanied by nausea, vomiting, and not wanting to eat. A routine blood test usually shows normal white blood cell count and normal neutrophils, and an ultrasound examination of the abdomen reveals enlarged lymph nodes in the mesentery to clarify the diagnosis. After diagnosis, oral antibiotics, such as cefixime, or intravenous antibiotics can be used for treatment.