Children with diarrhea and headaches are usually caused by gastrointestinal colds, dysentery, meningitis and other conditions. 1. Gastrointestinal colds: Children with diarrhea and headaches can be caused by viral infections leading to gastrointestinal cold symptoms, usually accompanied by abdominal pain, vomiting, fever and other symptoms. 2. Dysentery: dysentery may also lead to diarrhea and headache in children, usually accompanied by fever, abdominal pain, nausea and other symptoms, especially toxic dysentery, to the central nervous system symptoms, headache, irritability, convulsions and other symptoms can occur one after another. 3. Meningitis: some meningitis patients will also appear diarrhea headache, some of which is seen in meningitis virus endemic areas by mosquito bites infected, the patient is usually manifested as fever, headache, diarrhea and other symptoms. Children with diarrhea and headache, there may be other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.