The physician should be especially concerned if the patient has any of the following (Silberstein, 1992; Edmeads, 1988):
* a new-onset headache in a patient over the age of 50;
* a sudden-onset headache;
* a headache that is subacute in onset and gets progressively worse over days or weeks;
The physician should be especially concerned if the patient has any of the following (Silberstein, 1992; Edmeads, 1988):
* a new-onset headache in a patient over the age of 50;
* a sudden-onset headache;
* a headache that is subacute in onset and gets progressively worse over days or weeks;
