Headaches in six-year-old boys may be caused by colds, anemia, sinusitis, intracranial tumors and other causes. 1. cold: headache in six-year-old children may be caused by the toxic reaction caused by cold virus, headache caused by irritation and dilation of blood vessels in the head. 2. Anemia: Anemia in six-year-old children can easily lead to insufficient blood supply, dizziness and headache. Parents need to take their children to the hospital for examination to determine what type of anemia is present. Common ones include iron deficiency anemia, which requires targeted treatment. 3. Intracranial tumors: Intracranial tumors in six-year-old children can cause increased intracranial pressure, which in turn leads to the phenomenon of edema in the brain, causing headache symptoms. 4. Sinusitis: Sinusitis babies can also have a stuffy headache, which can be accompanied by symptoms such as runny nose and nasal congestion. There are many causes of headaches in six-year-old boys, such as intracranial infections and other diseases can also lead to headaches in children, parents should take their children to the hospital in a timely manner, to clarify the cause of the correct treatment.