Enlarged mesenteric lymph nodes is a common clinical condition that can occur in children of all ages, most commonly between the ages of 3 and 8 years. The clinical manifestations are mainly paroxysmal abdominal pain in children, mainly around the umbilicus, with nausea, vomiting and fever in severe cases, and ultrasound indicates enlarged mesenteric lymph nodes, clinically known as mesenteric lymphadenitis. It is advisable to eat antispasmodic and analgesic drugs such as methotrexate, and also probiotics such as mamethoxazole and tetracycline tablets. You can apply hot compresses locally, using hot water bags or hot salt packs to keep the bowels open. Suggest a light diet, avoid spicy, irritating food, as the age increases over 12 years old disease basically disappears.