If a headache at a certain time, for example, only at night, or vice versa, only in the morning, look at the intracranial pressure, since this condition can be caused by hypertension.
Uma ikhanda ngesikhathi esithile, isibonelo, kuphela ebusuku, noma okuphambene nalokho, kuphela ekuseni, ukubheka ingcindezi intracranial, kusukela kulesi simo kungadalwa nomfutho wegazi ophezulu.