Children occasionally headache for no reason may be related to trauma, but also may be related to colds, sinusitis, intracranial lesions and other factors. 1. trauma: children occasionally headache for no reason may and usually play time, did not pay attention to fall, touch head related. 2. Cold and flu: If a child has a cold, fever and other viral or bacterial infections during a headache, it may also lead to the above situation. 3. Sinusitis: If a child has sinusitis, it may also cause occasional headaches, accompanied by a runny nose. 4. Intracranial lesions: If a child has an intracranial infection or lesion, such as a brain tumor or intracranial hemorrhage, it can also lead to the above situation. Children with occasional headaches for no apparent reason may have other causes, it is recommended to go to the hospital in time for relevant examinations, to clarify the cause of the disease and then actively treat the symptoms.