Hi welcome to HCM... First of all for this chronic headache rule out anemia by HB investigation ... If low treated with iron tablets and vitamin supplementation.... If you are taking stress related to study than also headache can be there .... So try to avoid stress ... If needed behavioural therapy useful... Second measure your blood pressure , if high than chance of hypertension is there .... For that suitable drug and lifestyle modification needed ... Refractive error also should be checked .. If working more on computer or watching more tv than headache can be as tension headache ...For that you might given amitryptillin.... If having intolerance to loud noise , vomiting , etc migraine should be ruled out ... If no significant cause found CT scan like higher investigation needed. .. Take care Discuss all this with your treating doc.