Hello,
The following might be probable causes of your daughter's headache:
1) Chronic sinus infection
2) Viral cold
3) Eye refractive errors
4) Deviated nasal septum
5) Nasal spur or nasal polyp
6) Very rarely any tumors in brain
My recommendations are as follows:
1) First rule out it's due to any change in power of eyes by getting tested by an ophthalmologist or optometrist.
2) Then if everything is ok, we must rule out nose and related causes like
sinusitis, nasal polyp etc., by meeting an ENT surgeon.
3) If everything is ok there, then you may need to take her to a physician or a
neurologist to rule out other brain causes like tumors etc., by a
CT scan.
So, for this, your daughter needs an in person clinical examination and correct diagnosis for appropriate treatment.
Take care. Hope I have answered your question. Let me know if I can assist you further.
Regards,
Dr. Pallavi M., Anesthesiologist