Thanks for posting,
Normally a 6 year old should not be having constant headache
except of course if there is notion of recurrent infections like sinusitis
or flu or other infections. If the headache is recurrent and severe then it is a cause for concern and surely requires immediate medical attention.
will be the doctor of choice to look into your daughter's headache. Vomiting
and headache usually signify signs of increased intracranial pressure and an intracranial affection needs to be excluded immediately. Your daughter might be required to go through a CT scan
or MRI and maybe a series of laboratory tests done.
Hope this helps